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September 11, 2018


Tuesday, September 11, 2018

Biostatistics Help: Faculty, Staff, Pre-MD and Post-Doc Walk-In Clinic
1:30 PM - 2:30 PM

Biostatistics consulting is available to all Johns Hopkins University faculty, staff, pre-MDs and post-docs conducting clinical and translational research. 1:30 PM – 2:30 PM Wolfe Street Building Room: E3142
Special Speaker for IH Doctoral Students
2:00 PM - 3:30 PM

Bloomberg School of Public Health

International Public Health Luminary, Dr. Rita Thapa, will be at the school on Tuesday, September 11th at 2:00 p.m in W2030 to meet with our IH doctoral students.  

This is a Don't Miss opportunity.  We encourage you to attend.

You can see Dr. Thapa's bio at

RSVP to Brenda Casey
Eric Stubley "Class Groups, Congruences, and Cup Products. "
4:30 PM - 5:30 PM


Speaker: Eric Stubley (U. Chicago) Abstract: The structure of class groups of number fields is generally mysterious, but can sometimes be related to explicit congruence conditions, for example as in Kummer's criterion for regularity. A similar result of Calegari and Emerton relates the rank of the p-part of the class group of Q(N^1/p) to whether or not a certain quantity (Merel's number) is a p-th power mod N, where p and N are prime with N = 1 mod p. We study this rank by building off of an idea of Wake and Wang-Erickson, namely to relate elements of the class group to the vanishing of certain cup products in Galois cohomology. Using this idea, we prove new bounds on the rank in terms of similar p-th power conditions, and we give exact characterizations of the rank for small p. This talk will aim to explain the interplay between ranks of class groups, explicit congruences, and cup products in Galois cohomology. This is joint work with Karl Schaefer.
Jingjun Han "Birational boundedness of rationally connected Calabi--Yau 3-folds "
4:30 PM - 5:30 PM


Speaker: Jingjun Han, JHU Abstract: We will show that rationally connected klt Calabi—Yau 3-folds form a birationally bounded family, and such 3-folds with mld bounding away from 1 are bounded modulo flops. This is a joint work with Weichung Chen, Gabriele Di Cerbo, Chen Jiang and Roberto Svaldi.

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