ANNOUNCEMENT:     TRIANGLE GEOMETRY-TOPOLOGY SEMINAR

 

DATE:             Friday, March 7, 2003        

 

LOCATION:         Hempfield High School, Room 219

                  followed by dinner at Gatsby's on Main in Landisville

 

4:30 TALK:        Leyla Batakci, Elizabethtown College

                  "On the cohomology of the Steenrod algebra mod

                  nilpotent elements"

 

                  ABSTRACT: .pdf file attached.

 

 

5:00 TALK:        Mike McCooey, Franklin & Marshall College

                  "Concordance of Z_p x Z_p actions on the four- 

                  sphere."

 

                  ABSTRACT: Actions of a group on a manifold M are

                  concordant if there's a (nice) action on M x I that

                  restricts to each of the given actions on the ends.

                  Concordance is (in general) a somewhat stronger

                  equivalence relation than cobordism.           

                  I will attempt to explain:

                  1. Why I care about S^4 and Z_p x Z_p especially,

                  2. What actions of Z_p x Z_p on S^4 look like, and

                  3. How one might go about classifying them up to

                  concordance.  The talk will be informal, and

                  hopefully entertaining. Twenty minutes is probably

                  not long enough for it to get too scary.

 

EVERYONE WELCOME.