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Monday, April 20, 2026

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Monday, April 20th, 2026
4:00pm – 5:00pm
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Astronomy Tea Talk

Cahill 370
Ultraluminous X-ray Sources: Accretion Physics at the Extremes
Roberta Amato, Postdoc at National Institute for Astrophysics (INAF), Italy,
4:00pm – 5:00pm
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Caltech/USC Joint Algebra and Geometry Seminar (1/2)

Linde Hall 310
Two unexpected theorems about 5
Paul Melvin, Professor, Department of Mathematics, Bryn Mawr College,
4:00pm – 5:00pm
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High Energy Physics Seminar

Online and In-Person Event
Multiple axions: Strong CP, Dark Matter and how to count them
Pablo Quilez, CERN,
5:00pm – 6:00pm
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Caltech/USC Joint Algebra and Geometry Seminar (2/2)

Linde Hall 310
Slice disks modulo local knotting
Jeffrey Meier, Professor, Department of Mathematics, Western Washington University,