TGTS Tetrahedral Geometry/Topology Seminar

Sponsored by Elizabethtown College, Franklin and Marshall College,
Lebanon Valley College, and Millersville University

Speakers 2017-18

 15 September:  Ron Umble, Millersville University
 13 October:    Samantha Pezzimenti, Bryn Mawr College
  3 November:   Vince Coll, Lehigh University
  2 February:   Henry Chan, Franklin & Marshall College
  2 March:      Ron Umble, Millersville University
  6 April:      Mona Merling, Johns Hopkins University
TGTS is a regional mathematics seminar/colloquium. We meet at 4:30 p.m. on the first Friday of each month during the academic year (with some exceptions, as noted in the schedule above). The public is cordially invited to attend.

Next Talk

    Date: 6 April 2018
Location: Hempfield High School, Room 213
 Speaker: Mona Merling, Johns Hopkins University
   Title: Group actions in algebraic K-theory

Abstract. Algebraic K-groups are deep invariants of rings, which
hide beautiful patterns and connections to problems in number
theory. Lower K-groups have explicit algebraic descriptions, but higher
algebraic K-groups require sophisticated topological and categorical
machinery to define, and their introduction by Quillen was the
culminating point of a long search for a definition that would
meaningfully generalize the existing definitions of lower K-groups. In
this talk, I will give a flavor of algebraic K-theory and its history,
and I will describe current research aimed at telling the story in the
case when the input has a group action.


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