Thu | Feb 25 | **13:30** | Geometry Seminar - University of Florence | Uwe Semmelmann | Stability of Einstein metrics | |

Thu | Feb 25 | **14:00** | CERN BSM Forums | Rick S. Gupta | A heavy axion/'massless up' from partial compositeness | |

Thu | Feb 25 | **14:00** | (ED-3S) Essex Data Science Seminar Series | Tolulope Fadina | Symmetric measures of variability induced by risk measures | |

Thu | Feb 25 | **14:00** | Lisbon webinar in analysis and differential equations | Boyan Sirakov | The Vázquez maximum principle and the Landis conjecture for elliptic PDE with unbounded coefficients | |

Thu | Feb 25 | **14:00** | Dublin Algebra and Number Theory Seminar | Chi-Yun Hsu | Partial classicality of Hilbert modular forms | |

Thu | Feb 25 | **14:00** | FD Seminar | İlke Çanakçı | TBA | |

Thu | Feb 25 | 14:30 | CENTRA Seminar | Valerio Faraoni | Imperfect fluid description of scalar-tensor gravity and an application to the GR limit | |

Thu | Feb 25 | 14:40 | Function spaces | Javier Soria | Optimal doubling measures and applications to graphs | |

Thu | Feb 25 | 15:00 | Copenhagen-Jerusalem Combinatorics Seminar | Vasso Petrotou | Tom & Jerry triples | |

Thu | Feb 25 | 15:00 | DinAmicI: Another Internet Seminar | Paolo Giulietti | Infinite mixing for accessible skew products | |

Thu | Feb 25 | 15:00 | MESS (Mathematics Essex Seminar Series) | Christina de Filippis | Differentiable vs non-differentiable systems | |

Thu | Feb 25 | 15:00 | Machine Learning and Physics | Prof Lode Pollet | Discovering new phases of matter with unsupervised and interpretable support vector machines | |

Thu | Feb 25 | 15:10 | Online GAPT Seminar | Karl-Hermann Neeb | A representation theoretic perspective on modular theory | |

Thu | Feb 25 | 15:15 | London Integrability Journal Club | Benoit Vicedo | Integrable E-models, 4d Chern-Simons theory and affine Gaudin models | |

Thu | Feb 25 | 15:15 | electronic Computational Homotopy Theory seminar | Lennart Meier | TBA | |

Thu | Feb 25 | 15:30 | Harvard CMSA Thur: Quantum Matter/QFT/Condensed Matter/Math | Justin Kaidi | Exploring Non-Supersymmetric String Theory | |

Thu | Feb 25 | 16:00 | Control in Times of Crisis. Online seminar. | Irena Lasiecka | Control of a third order in time dynamics governing nonlinear acoustic waves - a view from the boundary | |

Thu | Feb 25 | 16:00 | Colloquium de l'institut de mathématiques de Jussieu - Paris Rive Gauche | Damien Calaque | Représentations de carquois et lieux critiques relatifs | |

Thu | Feb 25 | 16:00 | Frontiers of Parameterized Complexity | Bart Jansen | Algebraic Sparsification for Decision and Maximization Constraint Satisfaction Problems | |

Thu | Feb 25 | 16:00 | GOThIC - Ischia Online Group Theory Conference | Agnieszka Bier | On weak Sierpinski subsets in groups | |

Thu | Feb 25 | 16:00 | Seminar on the Mathematics of Reaction Networks | Chuang Xu | Dynamics of one dimensional stochastic reaction networks | |

Thu | Feb 25 | 16:00 | Number Theory Web Seminar | Ben Green | New lower bounds for van der Waerden numbers | |

Thu | Feb 25 | 16:00 | Moscow Big Seminar of CombiGeo Lab | Alexander Kolpakov | Space vectors forming rational angles | |

Thu | Feb 25 | 16:15 | Global Poisson webinar | David Martínez Torres | Coregular submanifolds and Poisson submersions | |

Thu | Feb 25 | 16:30 | Seminar on the Mathematics of Reaction Networks | Balazs Boros | Dynamics of planar deficiency-one mass-action systems | |

Thu | Feb 25 | 16:30 | electronic Computational Homotopy Theory seminar | Christy Hazel | TBA | |

Thu | Feb 25 | 17:00 | Oxford-Warwick Complexity Meetings | Robert Robere | Amortized circuit complexity, formal complexity measures, and catalytic algorithms | |

Thu | Feb 25 | 17:00 | International Zoom Inverse Problems Seminar, UC Irvine | Houssem Haddar | TBA | |

Thu | Feb 25 | 17:00 | ViBraNT (Virtual Brazilian Number Theory seminar) | Caroline Turnage-Butterbaugh | Gaps between zeros of the Riemann zeta-function | |

Thu | Feb 25 | 17:00 | QFT and Geometry | Du Pei | On the compactification of 6d theories | |

Thu | Feb 25 | 17:00 | Recent Advances in Modern p-Adic Geometry (RAMpAGe) | Maria Fox | Supersingular loci of some unitary Shimura varieties | |

Thu | Feb 25 | 17:00 | Topos Institute Colloquium | Samson Abramsky | [Title TBA] (rescheduled) | |

Thu | Feb 25 | 17:30 | UC Davis algebra & discrete math seminar | Sachin Gautam | R-matrices and Yangians | |

Thu | Feb 25 | 17:30 | SFU Quarantined NT-AG Seminar | Alex Heaton | Catastrophe discriminants of tensegrity frameworks | |

Thu | Feb 25 | 18:00 | Ohio State Topology and Geometric Group Theory Seminar | Stefan Witzel | Uncountably many simple groups up to quasi-isometry | |

Thu | Feb 25 | 18:00 | Princeton Algebraic Topology Seminar | Krzysztof Pawałowski | TBA | |

Thu | Feb 25 | 18:00 | UCI Mathematical Physics | Oluwadara Ogunkoya | Entanglement Entropy Bounds in the Higher Spin XXZ Chain | |

Thu | Feb 25 | 18:00 | Algebraic combinatorics seminar | Nick Loehr | Chain decompositions for q,t-Catalan numbers | |

Thu | Feb 25 | 19:00 | Online logic seminar | Sophia Knight | Reasoning about agents who may know other agents’ strategies in Strategy Logic | |

Thu | Feb 25 | 19:00 | Seminário Brasileiro de Grafos, Algoritmos e Combinatória | Victor Campos | Um Survey sobre a Conjectura da Otimalidade Dinâmica | |

Thu | Feb 25 | 19:50 | Geometry, Physics, and Representation Theory Seminar | Hunter Dinkins | Combinatorics of 3d Mirror Symmetry | |

Thu | Feb 25 | 20:00 | New York Number Theory Seminar | Giorgis Petridis | Almost eventowns | |

Thu | Feb 25 | 20:00 | Online Northeast PDE and Analysis Seminar | Avy Soffer | Evolution of NLS with bounded data | |

Thu | Feb 25 | 21:15 | The Ohio State Colloquium Series | William Slofstra | TBA | |

Thu | Feb 25 | 21:30 | Fellowship of the Ring | Mark Walker | How short can a module of finite projective dimension be? | |

Thu | Feb 25 | 21:30 | M-seminar | David Nadler | Verlinde formulas in Betti Geometric Langlands | |

Thu | Feb 25 | 21:30 | Princeton/IAS number theory seminar | Alexander Smith | Selmer groups and a Cassels-Tate pairing for finite Galois modules | |

Thu | Feb 25 | 22:00 | Columbia CUNY NYU number theory seminar | Benjamin Howard | ARITHMETIC VOLUMES OF UNITARY SHIMURA VARIETIES | |

Thu | Feb 25 | 22:00 | UCSD number theory seminar | Tim Trudgian | Verifying the Riemann hypothesis to a new height | |

Thu | Feb 25 | 23:00 | SMRI Algebra and Geometry Online | Monica Nevins | Characters and types: the personality of a representation of a p-adic group, revealed by branching to its compact open subgroups | |

Fri | Feb 26 | 00:00 | CUNY Geometric Analysis Seminar | Weimin Sheng | Removable singularity of positive mass theorem with continuous metrics | |

Fri | Feb 26 | 00:00 | Rocky Mountain Rep Theory Seminar | Robert McRae | On semisimplicity of modules for C_2-cofinite vertex operator algebras | |

Fri | Feb 26 | 03:00 | East Asian String Webinars | -- No Webinar -- | TBA | |

Fri | Feb 26 | 05:00 | Asia Pacific Seminar on Applied Topology and Geometry | Lakshmi Priya M.E. | Nodal sets of Gaussian Laplace eigenfunctions | |

Fri | Feb 26 | 05:30 | Asia Pacific Seminar on Applied Topology and Geometry | Niklas Hellmer | Discrete Prokhorov Metric for Persistence Diagrams | |

Fri | Feb 26 | 06:00 | KEK Theory Seminar | Kazuki Ikeda | Real-time dynamics of Chern-Simons fluctuations near a critical point | |

Fri | Feb 26 | 10:00 | Fano Varieties and Birational Geometry | Andrea Fanelli | Rational simple connectedness and Fano threefolds | |

Fri | Feb 26 | 10:30 | Seminario de Análisis y Aplicaciones UAM-ICMAT | Carmelo Puliatti | Blow-ups of caloric measure and applications to two-phase problems | |

Fri | Feb 26 | 11:00 | Algebra and Logic Seminar | Hristo Ganchev | Enumeration Reducibility: 60 years of investigation | |

Fri | Feb 26 | 11:30 | Fano Varieties and Birational Geometry | Jesús Martínez García | Asymptotically log del Pezzo surfaces | |

Fri | Feb 26 | 12:30 | Industrial mathematics in Chebyshev laboratory | Ekaterina Noskova | Multi-objective optimization of very expensive black-box functions with SMAC | |

Fri | Feb 26 | 13:00 | Budapest Big Seminar on Combinatorics + Geometry | Wolfgang Mulzer | TBA | |

Fri | Feb 26 | 13:00 | Deformation Quantization Seminar | Christiaan van de Ven | Asymptotic equivalence of two strict deformation quantizations and applications to the classical limit | |

Fri | Feb 26 | 13:00 | Durham Maths HEP seminars | Elli Pomoni | Type-B Anomalies on the Higgs Branch | |

Fri | Feb 26 | 13:00 | IIT Bombay Virtual Commutative Algebra Seminar | Bernd Ulrich | Generalized multiplicities and integral dependence-II | |

Fri | Feb 26 | 13:30 | Online Weekly Research Seminar for Early Career Mathematicians from India | Gauranga K. Baishya | Combinatorial proof of a beautiful Euler-type Identity | |

Fri | Feb 26 | 13:30 | The London geometry and topology seminar | Joseph Waldron | Minimal model program for threefolds of mixed characteristic. | |

Fri | Feb 26 | 14:00 | Functional analysis and operator algebras in Athens | M. Ghandehari | Fourier algebras of the group of R-affine transformations and a dual convolution. | |

Fri | Feb 26 | 14:00 | (LAGARTOS) Latin American Real and Tropical Geometry Seminar | Lucía López de Medrano | Topology of tropical varieties | |

Fri | Feb 26 | 14:00 | Warwick Combinatorics Seminar | Lutz Warnke | Prague dimension of random graphs | |

Fri | Feb 26 | 14:00 | Zoominar in Dynamical Systems @ Porto | Federico Rodriguez-Hertz | Rigidity for expanding maps | |

Fri | Feb 26 | 14:00 | Fano Varieties and Birational Geometry | Erik Paemurru | Birational geometry of sextic double solids with a compound A_n singularity | |

Fri | Feb 26 | 14:15 | Symplectic zoominar | Sylvain Courte | Twisted generating functions and the nearby Lagrangian conjecture (Part of the Generating Functions Day joint with Western Hemisphere Virtual Symplectic Seminar) | |

Fri | Feb 26 | 14:30 | Finite Groups in Valencia | Zeinab Akhlaghi | Character degree graph and Huppert’s ρ-σ- conjecture | |

Fri | Feb 26 | 15:00 | Amplitudes Seminar | Aidan Herderschee | Algebraic branch points at all loop orders from positive kinematics and wall crossing (arXiv:2102.03611) | |

Fri | Feb 26 | 15:00 | Banach spaces webinars | Ben Wallis | TBA | |

Fri | Feb 26 | 15:00 | the Hypoelliptic Laplacian and NCG Seminar | Jialin Zhu | Real analytic torsion forms | |

Fri | Feb 26 | 15:00 | Pure Mathematics Colloquium at Southampton | Markus Linckelmann | On the Lie algebra structure of outer derivations of finite group algebras | |

Fri | Feb 26 | 15:00 | Virtual Maxwell Analysis Seminar | Hyunju Kwon | Hölder continuous Euler flows with local energy dissipation | |

Fri | Feb 26 | 15:20 | Finite Groups in Valencia | Álvaro L. Martínez | Symmetric groups and the Heisenberg category | |

Fri | Feb 26 | 15:30 | Fano Varieties and Birational Geometry | Daniel Cavey | Restrictions on the Singularity Content of a Fano Polygon | |

Fri | Feb 26 | 15:45 | Kolchin Seminar in Differential Algebra | Vincent Bagayoko | Three flavors of H-fields | |

Fri | Feb 26 | 15:50 | Finite Groups in Valencia | Carolina Vallejo | Problems on characters involving two primes | |

Fri | Feb 26 | 16:00 | Columbia Automorphic Forms and Arithmetic Seminar | Ashay Burungale | An even parity instance of the Goldfeld conjecture | |

Fri | Feb 26 | 16:00 | CRM - Séminaire du CIRGET / Géométrie et Topologie | Chris Kottke | Bigerbes and applications | |

Fri | Feb 26 | 16:00 | CRM-Séminaire du LACIM | Sébastien Labbé | Une caractérisation des mots Sturmiens par les paires asymptotiques indistinguables | |

Fri | Feb 26 | 16:00 | FoCM 2021 online seminar series | Dan Spielman | Using the Gram-Schmidt walk to balance covariates in randomized controlled trials | |

Fri | Feb 26 | 16:00 | Queen Mary University of London Algebra and Number Theory Seminar | Jun Su | Arithmetic group cohomology with generalised coefficients | |

Fri | Feb 26 | 16:00 | Stochastics and Statistics Seminar Series | Yury Polyanskiy | Self-regularizing Property of Nonparametric Maximum Likelihood Estimator in Mixture Models | |

Fri | Feb 26 | 16:30 | Graduate Inter-University Math seminar | Jacopo Zanchettin | Galois objects of Hopf algebras | |

Fri | Feb 26 | 16:40 | Finite Groups in Valencia | Claudio Marchi | Picard groups for blocks with normal defect groups | |

Fri | Feb 26 | 17:00 | FoCM 2021 online seminar series | Kristin Lauter | TBA | |

Fri | Feb 26 | 17:00 | Nonclassical Logic Webinar | Stefano Bonzio | TBA | |

Fri | Feb 26 | 17:00 | Topological Quantum Field Theory Club (IST, Lisbon) | Ben Elias | Introduction to the Hecke category and the diagonalization of the full twist | |

Fri | Feb 26 | 17:00 | Western Hemisphere virtual symplectic seminar | Simon Allais | Periodic points of Hamiltonian diffeomorphisms and generating functions | |

Fri | Feb 26 | 17:15 | Graduate Inter-University Math seminar | Laura Selicato | Hyperparameters Optimization in Learning Approaches | |

Fri | Feb 26 | 17:30 | Probability and the City Seminar | Duncan Dauvergne | Learning from the directed landscape | |

Fri | Feb 26 | 18:00 | Columbia algebraic geometry seminar | Gavril Farkas | Green's Conjecture via Koszul modules | |

Fri | Feb 26 | 18:00 | Discrete Optimization Talks | Thibaut Vidal | TBA | |

Fri | Feb 26 | 18:00 | STAGE | Naomi Sweeting | Crystalline cohomology | |