Thursday, April 1
4:00 pm - 5:00 pm	Physics Colloquium Online Event AI for physics & physics for AI Max Tegmark, MIT,
4:00 pm - 5:00 pm	Number Theory Seminar Online Event Maass forms and the mock theta function f(q) Alexander Dunn, Department of Mathematics, Caltech,

Friday, April 2
11:00 am - 12:00 pm	IQIM Postdoctoral and Graduate Student Seminar Online Event Verifying quantum computations using interactive proofs Urmila Mahadev, Assistant Professor of Computing and Mathematical Sciences,
11:00 am - 12:00 pm	High Energy Theory Seminar - CANCELLED Online Event TBD Geoff Penington, UC Berkeley,
2:00 pm - 3:00 pm	TAPIR Seminar Online Event Halo's Magnetic field as Evident from stRiated Interstellar Clouds (HOMERIC) Aris Tritsis, Postdoctoral Fellow, Research School of Astronomy and Astrophysics, Mount Stromlo Observatory, ANU,
3:00 pm - 4:00 pm	Geometry and Topology Seminar Online Event Skein lasagna modules of 2-handlebodies Ikshu Neithalath, Mathematics Department, UCLA,

Monday, April 5
12:00 pm - 1:00 pm	Logic Seminar Online Event Subgroups of PLo(I)PLo^fo(I) which do not embed into Thompson's group FF Justin Moore, Department of Mathematics, Cornell University,
4:00 pm - 5:00 pm	High Energy Physics Seminar Online Event Cosmology and Unification Raman Sundrum, University of Maryland,

Tuesday, April 6
3:00 pm - 3:50 pm	Caltech/UCLA Joint Analysis Seminar Online Event The extremals of the Alexandrov-Fenchel inequality Ramon van Handel, Operations Research & Financial Engineering, Princeton University,
4:00 pm - 4:50 pm	Caltech/UCLA Joint Analysis Seminar Online Event Explicit and nonlinear variants of Bourgain's projection theorem Pablo Shmerkin, Mathematics Department, University of British Columbia,

Wednesday, April 7
4:00 pm - 5:00 pm	Astronomy Colloquium Online Event Revealing Massive Star Mass Loss Through Supernovae Takashi Moriya, Assistant Professor, NOA Japan,

Thursday, April 8
4:00 pm - 5:00 pm	Physics Colloquium Online Event Unveiling Our Dynamic Infrared Sky Mansi Kasliwal, Caltech,
4:00 pm - 5:00 pm	Number Theory Seminar Online Event The Relative Trace Formula and Its Applications Liyang Yang, Department of Mathematics, Caltech,

Friday, April 9
11:00 am - 12:00 pm	IQIM Postdoctoral and Graduate Student Seminar Online Event Universal Lindblad Equation for Open Quantum Systems Frederik Nathan, Postdoctoral Scholar, Refael Group,
11:00 am - 12:00 pm	High Energy Theory Seminar Online Event Probing gravitational EFTs with the four-graviton amplitude Sasha Zhiboedov, CERN,
2:00 pm - 3:00 pm	TAPIR Seminar Online Event Radiative turbulence in magnetically-dominated astrophysical plasmas Emanuele Sobacchi, Postdoctoral Researcher, Department of Astronomy, Columbia University,
3:00 pm - 4:00 pm	Geometry and Topology Seminar Online Event Amphichiral knots with large 4-genera Allison Miller, Mathematics Department, Rice University,

Monday, April 12
9:00 am - 10:00 am	High Energy Physics Seminar Online Event Enabling Searches for Long-lived Particles and Precision Timing at CMS Cristian Peña, Fermilab,
12:00 pm - 1:00 pm	Logic Seminar Online Event The Wadge hierarchy on Zariski topologies Riccardo Camerlo, Department of Mathematics, University of Genoa,

Wednesday, April 14
4:00 pm - 5:00 pm	Astronomy Colloquium Online Event The NANOGrav 12.5-Year Data Set: Knocking at the Gravitational Wave Door Maura McLaughlin, Eberly Family Distinguished Professor, Department of Physics and Astronomy, West Virginia University,

Thursday, April 15
9:00 am - 9:55 am	Analysis Seminar Online Event On the stability of classical boundary layers Toan Nguyen, Mathematics Department, Pennsylvania State University,
4:00 pm - 5:00 pm	Number Theory Seminar Online Event The distribution of closed geodesics on the modular surface Alexandre Perozim de Faveri, Department of Mathematics, Caltech,
4:00 pm - 5:00 pm	Physics Colloquium Online Event Active Topology Cristina Marchetti, UC Santa Barbara,

Friday, April 16
11:00 am - 12:00 pm	High Energy Theory Seminar Online Event Dynamics of 1+1 Dimensional Gauge Theories and Exotic Symmetries Zohar Komargodski, Simons Center for Geometry and Physics,
11:00 am - 12:00 pm	IQIM Postdoctoral and Graduate Student Seminar Online Event Building a quantum computer with cat codes Fernando Brandão, Bren Professor of Theoretical Physics, Head of Quantum Algorithms AWS,
2:00 pm - 3:00 pm	TAPIR Seminar Online Event A hidden Markov model search for gravitational waves from twelve young supernova remnants Meg Millhouse, Postdoctoral Research Fellow, School of Physics, University of Melbourne,
3:00 pm - 4:00 pm	Geometry and Topology Seminar Online Event Existence of static vacuum extensions Lan-Hsuan Huang, Department of Mathematics, University of Connecticut,
4:00 pm - 5:00 pm	Math Graduate Student Seminar Online Event Operator algebras and the emergence of spacetime Elliott Gesteau, Department of Mathematics, Caltech,
7:00 pm - 9:00 pm	Stargazing Lecture Online Event Endless Hunt for Black Holes Wenbin Lu, David and Ellen Lee Postdoctoral Scholar Research Associate, Department of Theoretical Astrophysics, Caltech,

Sunday, April 18
8:00 am - 2:00 pm	Barry Simon's 75th Birthday Conference Online Event

Monday, April 19
12:00 pm - 1:00 pm	Logic Seminar Online Event A characterization of high transitivity for groups acting on trees François Le Maître, Jussieu Mathematics Institute – PRG, University of Paris,
4:00 pm - 5:00 pm	H.B. Keller Colloquium Online Event Improving Policy Learning via Programmatic Domain Knowledge Yisong Yue, Professor of Computing and Mathematical Sciences, Computing and Mathematical Sciences Dept., California Institute of Technology,
4:00 pm - 5:00 pm	High Energy Physics Seminar Online Event Dark photons and the cosmic radiation background Hongwan Liu, Princeton University,

Tuesday, April 20
10:00 am - 10:50 am	Caltech/UCLA Joint Analysis Seminar Online Event The mysteries of low-degree Boolean functions Nathan Keller, Department of Mathematics, Bar Ilan University,
11:00 am - 12:15 pm	Chemical Physics Seminar Online Event Ionic transport in nanoscale fluids far from equilibrium David Limmer, Assistant Professor of Chemistry, College of Chemistry, University of California, Berkeley,
11:00 am - 11:50 am	Caltech/UCLA Joint Analysis Seminar Online Event On the zeros of Fekete polynomials Oleksiy Klurman, School of Mathematics, University of Bristol,

Wednesday, April 21
4:00 pm - 5:00 pm	Astronomy Colloquium Online Event Cosmology with Massive Neutrinos Jia Liu, Postdoctoral Fellow, University of California, Berkeley,
5:00 pm - 6:00 pm	Watson Lecture - Sunlight to Everything: Catalyzing a Sustainable Future Online Event Jonas Peters, Bren Professor of Chemistry and Director of the Resnick Sustainability Institute, Division of Chemistry and Chemical Engineering, Caltech,

Thursday, April 22
9:00 am - 9:55 am	Analysis Seminar Online Event On the well-posedness of the derivative nonlinear Schr\"odinger equation Maria Ntekoume, Department of Mathematics, Rice University,
4:00 pm - 5:00 pm	Physics Colloquium Online Event The Dark Phase of Quantum Matter Louis Taillefer, Université de Sherbrooke and CIFAR,
4:00 pm - 5:00 pm	Number Theory Seminar Online Event A conjecture of Perrin-Riou Ashay Burungale, Department of Mathematics, Caltech,

Friday, April 23
11:00 am - 12:00 pm	High Energy Theory Seminar Online Event Real-time gravitational replicas Mukund Rangamani, UC Davis/QMAP,
11:00 am - 12:00 pm	IQIM Postdoctoral and Graduate Student Seminar Online Event Prethermalization and dynamics in topological SYK pumps Iliya Esin, Postdoctoral Scholar, Refael Group,
2:00 pm - 3:00 pm	TAPIR Seminar Online Event The Faintest Galaxies and their Dark Matter Halos Ethan Nadler, Graduate Student, KIPAC, Stanford University,
3:00 pm - 4:00 pm	Geometry and Topology Seminar Online Event The failure of the 4D light bulb theorem with dual spheres of non-zero square Hannah Schwartz, Department of Mathematics, Princeton University,

Monday, April 26
12:00 pm - 1:00 pm	Logic Seminar Online Event A dichotomy for countable unions of smooth Borel equivalence relations Noé de Rancourt, Kurt Gödel Research Center, University of Vienna,
7:30 pm - 9:30 pm	Astronomy on Tap Online Event "The First Stars and Galaxies in the Universe" Evan Nuñez, PhD Candidate, Department of Astronomy, Caltech, Rebecca Larson, PhD Candidate, Department of Astronomy, University of Texas, Austin,

Tuesday, April 27
11:00 am - 12:15 pm	Chemical Physics Seminar Online Event New Theoretical Approaches to Investigate Light-Matter Interactions Pengfei (Frank) Huo, Assistant Professor of Chemistry, Department of Chemistry, University of Rochester,

Wednesday, April 28
4:00 pm - 5:00 pm	Astronomy Colloquium Online Event Small But Mighty: The Tiniest White Dwarf and Other Stories Ilaria Caiazzo, Sherman Fairchild Postdoctoral Scholar, Theoretical Astrophysics, California Institute of Technology,

Thursday, April 29
9:00 am - 9:55 am	Analysis Seminar Online Event Wave decay on asymptotically flat spacetimes Peter Hintz, Department of Mathematics, MIT,
12:00 pm - 1:00 pm	Physics Colloquium Online Event New Directions for Light Dark Matter Yonit Hochberg, Hebrew University,

Friday, April 30
11:00 am - 12:00 pm	High Energy Theory Seminar Online Event Towards Lefschetz thimbles in sigma models Nikita Nekrasov, SCGP,
3:00 pm - 4:00 pm	Geometry and Topology Seminar Online Event Algebraic fibrations of surface-by-surface groups Stefano Vidussi, Department of Mathematics, University of California, Riverside,