A ternary string is a sequence of n symbols that has some of the digits 0, 1, 2. Explicit $q$-series form for $\hat Z$ is known for $SU(2)$ group, supergroup $SU(2|1)$ and ortho-symplectic supergroup $OSP(2|2)$. One can add superpotentials, which lead to Seiberg-like dualities between plumbing graphs with triangles. As you probably guess from my former comments under the present pseudonym, Im one of those students whom, maybe for lacking courage or ,who knows? Research | Hirosi Ooguri This lecture is aimed for the general public and does not request much prerequisites in mathematics. What is the !! In physical terms, we will discuss a relation between the BPS spectrum of an N=2 4-dimensional field theory and the enumerative geometry of the corresponding Seiberg-Witten integrable system. [Slides] [Video], Heeyeon Kim (Rutgers University) Do roots of these polynomials approach the negative of the Euler-Mascheroni constant? Nikita Nekrasov Andrew Neitzke - Yale University Philip Candelas To address this issue, we use the fusion-matrix bootstrap, which is recently developed in the context of the light-cone bootstrap. https://arxiv.org/pdf/0809.0305.pdf, Already at p.1 one reads, The Problem: According to textbooks, the passage from classical mechanics to quantum mechanics is made by replacing Poisson brackets with commutators. My talk will be based on recent joint work with Baej Ruba. From this description, we propose a symmetry for the space of instantons on C^2 by an exceptional super Lie algebra called E(3|6). Physics Meets AI, LMU Munich, September 2020. Title: Path integral derivations of K-theoretic Donaldson invariants We are going to perform a construction of such quantum curves using the mathematical language of vertex operator algebras. Title: Spectrum in quantum mechanics and deformed periods [online talk] Much as I love this general topic, its getting far from the topic of the posting, so Ill just advise: read my book. These have been going on for over 25 years, with nothing new in a very long time. rotations and translations are typically discretized due to the presence of a lattice)? Since its online only, talks are much more accessible than usual (and since its free, over 2000 people have registered to in principle participate via Zoom). String Theory Explained: A Basic Guide to String Theory Site design / logo 2023 Stack Exchange Inc; user contributions licensed under CC BY-SA. Hiraku Nakajima When the cohomology theory is the Morava E-theory, we obtain a new family of quantum groups labelled by a prime number and a positive integer. For different choices of superpotential, the LG theory categorifies the quantum knot invariants associated with any simply-laced Lie algebra. String Theory Loves SUSY + Unification, to what they are saying now that the LHC has found no SUSY. What hes doing is emphasizing ideas that are often not taught in conventional QFT courses (although they should be). The resulting quivers highlight fractionalization of those branes, that we determine for single and multiple brane stacks. But this procedure you adopted in this post, is not the best way of understanding science, or communicating it. This story also relates to the higher-form global symmetry. Exactly because of this. The problem with the string theory hype is not that its new, exciting, cutting-edge speculation, rather than well-established. The powerpoint is here in powerpoint and here in pdf . Does a barbarian benefit from the fast movement ability while wearing medium armor? I will also explain how the Hecke operators from geometric and analytic Langlands correspondence are realized in the four dimensional super-Yang-Mills theory. Its explicit description as a QFT has remained elusive. AP Computer Science A 2021-22. lun, Abstract: Gross and Siebert developed a program for understanding mirror symmetry algebro-geometrically. de Lausanne), [D] Nathan Seiberg (Institute for Advanced Study), [T] Ashoke Sen (Harish-Chandra Research Institute), [R]Shu-Heng Shao (Institute for Advanced Study), [T] Yuji Tachikawa (Kavli IPMU and U of Tokyo), [T] Gregory Tarnopolsky (Carnegie MellonU), [T] Gonzalo Torroba (Centro Atmico Bariloche), [D] Edward Witten (Institute for Advanced Study), [G] Ahmadullah Zahed (Bangalore Indian Inst. Organizing Committee:Henrique Bursztyn (IMPA)Reimundo Heluani (IMPA)Marcos Jardim (IMECC-UNICAMP)Gonalo Oliveira (UFF) Scientific Committee:Anton Alexeev (Universit de Genve)David Ben-Zvi (University of Texas)Alexander Braverman (Brown University)Ron Donagi (University of Pennsylvania)Giovanni Felder (ETH Zrich)Dan Freed (University of Texas)Edward Frenkel (University of California)Marco Gualtieri (University of Toronto)Nigel Hitchin (University of Oxford)Sheldon Katz (University of Illinois)Maxim Kontsevich (IHS)David Morrison (University of California)Andrei Okounkov (Columbia University)Vasily Pestun (IHS)Boris Pioline (Sorbonne Universit \u0026 CNRS)Nicolai Reshetikhin (University of California)Pedro Vieira (Perimeter Institute for Theoretical Physics)Katrin Wendland (Albert-Ludwigs-Universitt Freiburg)Edward Witten (Institute for Advanced Study)Shing-Tung Yau (Harvard University \u0026 The Chinese University of Hong Kong)Maxim Zabzine (Uppsala University)Steering Committee: Ron Donagi (University of Pennsylvania)Dan Freed (University of Texas at Austin)Nigel Hitchin (University of Oxford)Sheldon Katz (University of Illinois)Maxim Kontsevich (IHS)David Morrison (University of California)Hiroshi Ooguri (Caltech \u0026 IPMU)Boris Pioline (Universit Pierre et Marie Curie)Joerg Teschner (DESY)Edward Witten (Institute for Advanced Study)Shing-Tung Yau (Harvard University)Redes Sociais do IMPA: https://linktr.ee/impabrIMPA - Instituto de Matemtica Pura e Aplicada https://impa.br | http://impa.br/videos#stringmath2021 Os direitos sobre todo o material deste canal pertencem ao Instituto de Matemtica Pura e Aplicada, sendo vedada a utilizao total ou parcial do contedo sem autorizao prvia e por escrito do referido titular, salvo nas hipteses previstas na legislao vigente.The rights over all the material in this channel belong to the Instituto de Matemtica Pura e Aplicada, and it is forbidden to use all or part of it without prior written authorization from the above mentioned holder, except in the cases prescribed in the current legislation. UBC, Vancouver, Canada. String Maths 2021 During the week of June 14-18 we will be hosting a major event in mathematical physics. What I wanted with my post was to point out that (in my view, again), you were selecting particular phrases that sounded negative, in what other wise were quite interesting exchanges among physicists. Likely Witten was thinking of things like the 6d (2,0) superconformal theory which has not classical limit and its construction is somewhat mysterious. People are attempting to understand things, with the tools at hand. Im posting this since I thought it could be useful for those very busy hep-ph physicists who may wish to go directly to (what I & surely many others) considers as the key moment from perspective lectures. These higher-categories are constructed by equivariantizing higher-categories corresponding to invertible higher-form symmetries. I will present recent progress in this direction in the simplest case of local $P^2$, and argue that its global BPS spectrum and flow tree structure can be deduced from a scattering diagram with simple initial data. [Slides] [Video], Lauren Williams (Harvard University) Summary Talk. More information can be found here Thematic trimester on vertex algebras: IMPA, Rio de Janeiro, June 14 - 18, 2021- Turned into an online eventSpeaker: Giovanni Felder (ETH Zrich)Lecture title: Superstring measure and the superper. ncdu: What's going on with this second size column? Sakura Schafer-Nameki We revisit this construction, working directly in the setting of the holomorphically twisted theory and viewing the topological twists as further deformations. Participant responses to online questionnaire, Clickhereto use the Slack workspace of Strings 2021. Ta strona wykorzystuje ciasteczka (cookies) w celu zapewnienia maksymalnej wygody w korzystaniu z naszego serwisu. I just took a look at that session and thought one remarkable point was where people were asked what would cause you to give up on string theory? The only answers forthcoming were from Igor Klebanov, who said he had been working on it his whole life, so couldnt see himself giving up on it, and Ashoke Sen, who said he would only give up on it if it were shown to be mathematically inconsistent. It is expected that the right mathematical structure to capture physical properties of such symmetries is that of higher-categories. Estrada Dona Castorina 110, Jardim Botnico He notes that to get at non-perturbative string theory we seem to need some more general understanding of quantum theories, going beyond the usual quantization starting with an action, and ends by saying maybe quantum information theory can help. Abstract: Quantum curves can be associated with the singular vectors in the Verma modules over the Virasoro algebra. Possible applications include computing massive string excitations, volumes of non-calibrated cycles, the SYZ conjecture, and approximating solutions to the Hermitian Yang-Mills equations. Another talk of Penrose (and a conference in his honour): Calculate string value in javascript, not using eval, How Intuit democratizes AI development across teams through reusability. I am currently reading Weinbergs book to fill some holes in my knowledge. In this talk, I explain an ongoing work to combine them, and to give a higher relations between QFTs and differential cohomology. Certain reformulations and consequences of cosmic censorship, however, may be true in asymptotically AdS solutions that admit a consistent holographic dual. The program is based on two main ingredients: The complex geometry of the underlying moduli spaces on the one hand, and cluster algebra structures defined by BPS- or DT-invariants on the other hand. One can define correlation functions and derive conformal bootstrap equations constraining the spectrum. I will present a general overview of the theory of CEIs, and discuss how it provides a conjectural approach to understanding enumerative mirror symmetry for the quintic threefold, in arbitrary genus. String Math 2021, held online by IMPA, Rio de Janeiro, Rio de Janeiro, June 14 - 18, 2021. Davide Gaiotto [Slides]. This gives the symmetry algebra action on the categorifiedDT. They have obvious applications to atomic physics. A better version was given September 22, 2021 at Yan Soibelman's M-seminar. But I believe that in todays update of this post you were not intellectually honest. We highlight prototype examples of elliptically fibered non-compact Calabi-Yau fewfolds and comment on the fate of these symmetries when these spaces become compact. If people think carrying on this argument is a good use of their time, they are encouraged to do so elsewhere. You are possibly right its now pointless to debate those issues. The methods can also be extended to SU(n) or G2 structure metrics Title: Non-rational $widehat{su}(2)$ cosets and Liouville field theory CEIs should be thought of as a precise realization of the general idea, due to Kontsevich, that the category of open strings (plus data of the splitting) determine closed string invariants. How do I connect these two faces together? String-Math 2015, Hainan Island, China (December 31, 2015 - January 4, 2016; How to Quantize Gravity. where the dualisable dimensions are fibred over a `spectator base). [Video], Hulya Arguz (IST Austria) Find centralized, trusted content and collaborate around the technologies you use most. Title:Plumbing graphs with matter String Data 2020, CERN, December 2020. Witten says something about a (possible) theory that is intrinsically quantum mechanical, which seems to mean a theory that does not start with a continuous field and quantise it, and which (therefore) presumably cannot be described in that way. We also discuss generalizations to b_2^+(X)>1. And how I regret it, D-branes also If youre so concerned about the public or physics community getting misled, surely youve contacted the organizers of and participants in the conferences Outreach activities , To this I was referring with my phrase Dear Peter, I believe you are cherry-picking parts of comments. To learn more, see our tips on writing great answers. - rgbk21. https://www.youtube.com/watch?v=WwmxaXTnGMI fiendish mathematics and mind-boggling . If youre so concerned about the public or physics community getting misled, surely youve contacted the organizers of and participants in the conferences Outreach activities. Abstract: I will review the Cohomological Hall algebra associated to a quiver and an oriented cohomology theory. Author: Online2PDF.com Created Date: Title: A holomorphic approach to fivebranes Update: At String 2021, yesterday Nima Arkani-Hamed gave a talk on Connecting String Theory to the Real World We See Outside Our Windows, where he sometimes sounds like me, contrasting the pre-LHC claims of string theorists: 1. One can also Higgs chiral multiplets. Sheldon Katz (University of Illinois) +1 upvote from me, and I've already used it in a project. Infinite Analysis 13 Autumn School on Quantum Dilogarithm, Modular Double, and Representation Theory. Pyry Kuusela (University of Oxford) [Slides] [Video], Andrei Caldararu (University of Wisconsin Madison) But I went through the hard road, being told just to accept all fundamental questions I raised above as unanswered and move on to the cutting-edge problems whatever and whonever decides what these are. String Math 2021 IMPA, Rio de Janeiro, June 14 - 18 Program Break. [Slides] [Video], Edward Witten (IAS) Weekly on Mondays 2:10 PM (Pacific Time) Meetings are in-person, at 402 Physics South. Leszek Hadasz (Jagiellonian University) Title: Calculating Quantum Knot Homology from Homological Mirror Symmetry Abstract: We will discuss how dualities of quantum field theories can be understood as analogous to Morita equivalences for algebras of various types. Abstract: I will discuss methods to numerically approximate Ricci-flat metrics for Calabi-Yau n-folds defined as complete intersections in toric ambient spaces. Abstract: The main goal of this talk is to present a novel conjectural incarnation of Langlands duality in the purely topological setting of character varieties of 3-manifolds and their quantizations via skein theory. Elements of this Hilbert space can be thought of as local operators living in a (d-1)-dimensional spacetime. Enjoy. Postal Address:Instituto de Matemtica Pura e Aplicada I will then outline work in progress with Gunningham and Safronov to prove the conjecture in a number of special cases. APCS. String theory is now older than not just my students, but also many of their parents and unfortunately its very well-established, sometimes even taught to high school students. This community is indeed becoming like a religious cult, something one of the speakers explicitly denied. Title: The sphere packing problem and beyond. By clicking Post Your Answer, you agree to our terms of service, privacy policy and cookie policy. This topic has been recently explored,from several differentperspectives,by Kontsevich-Soibelman and Doan-Rezchikov. We will explain how ideas from oriented matroids, tropical geometry, and cluster algebras shed light on the structure of the positive Grassmannian and the amplituhedron. I just had a look at that session, and more than anything, felt sorry seeing such eminent physicists giving such vacuous reasons just for the sake of defending a theory they have worked on for a long time. [Slides], Kasia Budzik (Perimeter Institute) Abstract: The D3-D5 and D2-D4 probe-brane systems with nonzero worldvolume flux are holographically dual to N=4 super Yang-Mills and ABJM theory in the presence of half-BPS domain walls. Besides reviews of major developments in the field and specialized talks on specific topics, an important novelty will be several informal discussions involving two researchers and the conference participants. Abstract: Since 2017, knots and symmetric quivers are known to be intimately related via BPS spectra. Abstract: The spectrum of BPS states in D=4 supersymmetric field theories and string vacua famously jumps across codimension-one walls in vector multiplet moduli space. Abstract: Homological block, commonly denoted by , is a 3-manifold invariant whose existence was predicted by S. Gukov, D. Pei, P. Putrov, and C. Vafa in 2017 using 3d/3d correspondence. Mark Gross The String Math series of conferences have become an important event for anyone working at the interface between mathematics and theoretical physics (string theory, quantum field theory and adjacent topics), bringing together an interdisciplinary cohort of pure mathematicians and theoretical physicists. Add a comment | 21 . [Slides]. [Slides] [Video], Pierrick Bousseau (ETH Zrich) It has a beautiful combinatorial structure as well as connections to statistical physics, integrable systems, and scattering amplitudes. [Slides] [Video], Nikita Nekrasov (Simons Center for Geometry and Physics) Discrete mathematics - ternary strings. - Mathematics Stack Exchange Abstract: Liouville field theory was introduced by Polyakov in the eighties in the context of string theory. We therefore relate differential and enumerative geometry, topology and geometric representation theory in mathematics, via a maximally-supersymmetric topological quantum field theory with electric-magnetic duality in physics. [Slides], Elise LePage (University of California, Berkeley) Java basics Unit 2 - Functions and Testing Unit 3 - String & Math Unit 4 - Loops & Algorithms Unit 5 - Classes and objects Unit 6 - Processing libraries Unit 7 - Arrays Unit 8 . But regarding superstrings, from such a strong statement one would expect at least proof (not rigorously by mathematical standards of course!) The CY manifolds admitting supersymmetric flux vacua can be associated to elliptic, Hilbert, or Bianchi modular forms, depending on the field the complex structure moduli of the CY take values in. This is a joint work with Kwokwai Chan and Ziming Ma. Jednym z najwaniejszych osigni Maryny Viazovskiej jest rozwizanie tzw. The two domain wall systems are thought to be integrable; the evidence comes mainly from the study of correlation functions at weak coupling. Title: Vafa-Witten Theory: Invariants, Floer Homologies, Higgs Bundles, a Geometric Langlands Correspondence, and Categorification [online talk] Im no whit wiser than when I began. PDF Aalok Misra Indian Institute of Technology Roorkee - IMPA Zygmunt Lalak Studiowaa na uniwersytecie im. Since it's online only, talks are much more accessible than usual (and since it's free, over 2000 people have registered to in principle participate via Zoom). Of course, I do not justify equally wrong comments from certain string theorists Hawking tells you what the semiclassical limit is. Why are trials on "Law & Order" in the New York Supreme Court? Mathematically, they can be identified with the K-theoretic versions of the Donaldson invariants on X. Time permitting, we will discuss a number of related results, such as the cluster structures and Newton-Okounkov bodies determined for the exceptional family in [Spacek-Wang22], and connection to other mirror symmetry statements such as the quantum D-module isomorphism proven for minuscule homogeneous spaces in [Lam-Templier17]. [Slides]. [Slides], Sachin Chauhan (Indian Institute of Technology, Bombay) IMPA, Rio de Janeiro, June 14 - 18, 2021- Turned into an online eventSpeaker: Simon Donaldson (Imperial College)Lecture title: Calibrated geometry and gauge . Local nodes will be coordinated worldwide for the joint viewing of talks and discussion sessions, and online satellite meetings during other time periods will be linked on this webpage. What is a word for the arcane equivalent of a monastery? Title: Smoothing, scattering and a conjecture of Fukaya [online talk] The EMS prizes are always a good indication of future Fields medalists IMPA, Rio de Janeiro, June 14 18, 2021 Turned into an online event. Only if the string comes from a trusted source. The video answered some questions that I still had (e.g. Title: Heterotic little strings, T-duality and 2-group symmetries Matthias Gaberdiel ERIC - EJ1326337 - From Notes to Strings, Mathematics Teacher: Learning StringBufferStringBuilder 1. Za te oraz inne osignicia otrzymaa wiele prestiowych nagrd i wyrnie, m.in. Title: Magnetic quivers for Superconformal Field Theories Adrian, I wonder how to find the number of ternary strings that have at least one 0, one 1 and one 2. How to transform string into integers and operators in Javascript? He lists two main things we know about the supposed theory: 1. Reimundo Heluani's Homepage - IMPA Goodbye eval()! (Anyway, String Theory is mainly about Quantum Gravity). LQG calculations claim to reproduce the semi-classical limit. We prove a reformulation of the main conjecture in Fukayas second correspondence, where multi-valued Morse theory on the base B is replaced by tropical geometry on the Legendre dual B. From the README: Francis (Skip) Fennell | Nov 3, 2021 . Paraphrasing Fermat, I have discovered the ugly truth of this, which this margin is too narrow to contain. Nevertheless, it may be worthy registering on this blog some of those problems which arent enough emphasized. StringStringBuilderStringBufferMath. CEIs are associated to an arbitrary Calabi-Yau category, together with a splitting of the Hodge filtration. Miranda Cheng All sessions were recorded and are available at the Youtube daily links below or by clicking on the lecture in the Schedule: Strings 2021 is an annual conference that brings together the entire string theory community. Math Talks and Number Strings provide the foundation to help students improve their understanding and comprehension of numbers. Progress in D=4, N=2 Field Theory, Strings-Math 2012, Bonn, July 2012 Powerpoint presentation here . String-Math 2021 conference (IMPA, Rio de Janeiro), [R = Review lecture] ; [D = Discussion session] ; [T = Research talk] ; [P = Public lecture] ; [S = Starting/Summary talks] ; [G = Gong-show talk]. How is the idea that particles are irreducible representations of the Poincar group work in the context of quasiparticles in condensed matter physics, where the underlying system background is generally not symmetric under Poincar transformations (e.g. Title: The higher dimensional tropical vertex He never actually gets anywhere near discussing the topic of the title for the talks, but does give a very nice leisurely introduction to computing amplitudes for zero-mass particles. On the utility of the equation 2+4=6 in supersymmetric quantum field theory. I will also touch upon the issue of the Lorentzian vs Euclidean metric slice in the path integral contour of quantum gravity. Announcement String Math 2022 Lorenz Eberhard(IAS) String correlators on AdS3 17:00 - 17:50 14:00 - 14:50 Melissa Liu(Columbia University) Wall-Crossing for the Mirror Quintic . Please, do appreciate that negative comments like yours distort the ideas the general public (or even physicists in other areas) have about String Theory, or Theoretical Physics in general. Abstract: Trace map on deformation quantized algebra leads to the algebraic index theorem. 2. Even beginning PhD students will no longer believe that ST is the only framework that reproduces BH entropy. In this talk, I will construct a large class of discrete geometric structures in all dimensions that satisfy these two properties, using the theory of hyperbolic buildings. I strongly disagree with you about the issue of the intellectual honesty of my account of what Witten and Arkani-Hamed had to say. Over-claim? Fall 2021. All, We then show the explicit duality between a specific form of correlators, the spectral form factor, and the Loschmidt echo with $hat{H}_{mathrm{mod}}$. This talk is based on joint work with Si Li. The simplest example is the qubit. His second talk explains how to think of things in terms of classifying representations of the Poincare group, an old topic that unfortunately is often no longer taught (see chapter 42 of my QM textbook). Miosz Panfil Abstract: I will review the holomorphic twist of four-dimensional N=1 gauge theories and present the Feynman diagrams which control the perturbative corrections to the twistingsupercharge and to the higher operations available in the twisted theories. We show that many 3d theories can be represented as plumbing graphs and hence be able to be constructed by compactifying M5-branes on corresponding plumbing manifolds using the construction of 3d-3d correspondence. I will discuss two such consequences the Penrose Inequality and constraints on the location of trapped surfaces as possible diagnostics for whether a given solution admits a consistent UV completion within AdS/CFT. One reason for this being a real mistake is that, divorced from input from the real world, theory becomes sterile: Questions Posed by Nature are Vastly Deeper and more fruitful than ones we humans tend to pose for ourselves. Caltech's Feynman Centennial Symposium on 12 May 2018. Any consistent theory of quantum gravity should reproduce this semiclassical limit. We focus on $\hat Z$ for $SO(3)$ group and orthosymplectic supergroup $OSP(1|2)$. In other words, the string boundary conditions on the probe branes preserve the integrability of the corresponding Green-Schwarz sigma models. What does "use strict" do in JavaScript, and what is the reasoning behind it? Non-QG QFT derivations that are not attempting to identify the microstates. Pawe Caputa and finally I published a package on npm string-math. The unitary equivalence relation implies a duality between the modular flow and time evolution. [Slides] [Video], David Jordan (University of Edinburgh) Not all N = (0, 4) boundary conditions admit such deformations. Unfortunately I dont think Arkani-Hamed has any compelling argument against string theory implies landscape implies nothing to say about particle physics. Share. These operators are interesting for several reasons: But it is clear that these colleagues are attempting to understand topics in QFT and Gravity, with the tools they have at hand. The talk is based on work in collaboration with Davide Gaiotto. Thats interesting, can you give pointers? Title: Liouville conformal field theory: from the probabilistic construction to the bootstrap construction In other physical contexts you have different symmetries than Poincare, often approximate symmetries. The linking numbers of plumbing graphs are interpreted as the effective mixed Chern-Simons levels of 3d N=2 theories with chiral multiplets. Abstract: Thepositive GrassmannianGrk,n0is the subset of the real Grassmannian where all Plcker coordinates are nonnegative. Here is an implementation of the Shunting-yard algorithm with additional support for unary prefix (e.g. Probably not if you ask me. I will describe how to bootstrap these perturbative corrections without computing actual Feynman integralsand present some preliminary results for pure N=1 gauge theory. Abstract:We discuss abelian 3d N=2 theories T[,U(1)] engineered by plumbing manifolds . Really amazing work! Katrin Wendland, Ron Donagi (University of Pennsylvania) String Math 2021 - Mina Aganagic (UC Berkeley) - YouTube Title: On topology change in Poisson-Lie T-duality Nicolai Reshetikhin If you are interested in what field theories Wittens probably interested in, then I certainly recommend you to follow the on going ICTSs Quantum Field Theory, Geometry and Representation Theory, with Wittens mini-course starting tomorrow: https://www.icts.res.in/program/qftgrt2021/talks, In order to get a feel what is at stake here, start with: In 2019, S. Gukov and C. Manolescu initiated a program to mathematically construct via Dehn surgery, and as part of that they conjectured that the Melvin-Morton-Rozansky expansion of the colored Jones polynomials can be re-summed into a two-variable series for knot complements. In addition, distinct tensor branch data obtained from 6D theories with a single instanton inspire us to classify heterotic strings probing ADE singularities. nagrod Salema, nagrod Matematycznego Instytutu Claya, nagrod New Horizons in Mathematics. 10. Jackiw-Teitelboim/PeterH, 3. Reimundo Heluani Organizing Committee. Fd. Im sorry if I cannot comment on other approaches to quantum gravity or non-stringy grand unification programs. Abstract: By studying M-theory on singular non-compact special holonomy spaces X we demonstrate, via a process of cutting and gluing of singularities that extend to the boundary of X, the appearance of 0-form, 1-form and 2-group symmetries in the resulting supersymmetric quantum field theory. It is healthy. He discusses the swampland philosophy, but gives as a challenge to theorists just making more precise the sort of empty question that this philosophy deals in (he asks whether D=9 SU(2021) to the power 2021 is in the swampland).