# Seminars & Colloquia Calendar

## Local-global principle for norm over semi-global fields

#### Sumit Chandra Mishra (Emory U.)

Location: ** Hill 525**

Date & time: Wednesday, 16 October 2019 at 2:00PM - 3:00PM

Abstract: Let K be a complete discretely valued field with residue field kappa. Let F be a function field in one variable over K and **X** a regular proper model of F with reduced special fibre X a union of regular curves with normal crossings. Suppose that the graph associated to **X** is a tree (e.g. F = K(t)). Let L/F be a Galois extension of degree n with Galois group G and n coprime to char(kappa). Suppose that kappa is algebraically closed field or a finite field containing a primitive n^{th} root of unity. Then we show that an element in F* is a norm from the extension L/F if it is a norm from the extensions L otimes_{F }F_{nu} / F_{nu} for all discrete valuations nu of F.

Charles Weibel Organizer's Page

Brooke Logan

Wujun Zhang Organizer's webpage

P. Gupta, X.Huang and J. Song Organizer's webpage

Swastik Kopparty, Sepehr Assadi Seminar webpage

Jeffry Kahn, Bhargav Narayanan, Jinyoung Park Organizer's webpage

Yonah Biers-Ariel, Mingjia Yang, and Doron Zeilberger --> homepage

Paul Feehan, Manousos Maridakis, Natasa Sesum Organizer's webpage

Lev Borisov, Emanuel Diaconescu, Angela Gibney, Nicolas Tarasca, and Chris Woodward Organizer's webpage

Jason Saied Seminar webpage

Brian Pinsky, Rashmika Goswami website

Corrine Yap Organizer's webpage

Edna Jones Organizer's webpage

Yanyan Li, Zheng-Chao Han, Jian Song, Natasa Sesum

Lisa Carbone, Yi-Zhi Huang, James Lepowsky, Siddhartha Sahi Organizer's webpage

Simon Thomas website

Kasper Larsen, Daniel Ocone and Kim Weston Organizer's page

Joel Lebowitz, Michael Kiessling

Yanyan Li, Haim Brezis

Brooke Ogrodnik website

Stephen D. Miller, John C. Miller, Alex V. Kontorovich, Claire Burrin seminar website

Stephen D. Miller

Organizers: Yanyan Li, Z.C. Han, Jian Song, Natasa Sesum

Yael Davidov Seminar webpage

Kristen Hendricks, Xiaochun Rong, Hongbin Sun, Chenxi Wu Organizer's page

Ebru Toprak, Organizer

Organizer: Luochen Zhao

James Holland; Organizer website

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