Tue, Feb. 21 11am (MATH 350) 
Number Theory Arthur Baragar (University of Nevada Las Vegas) Apollonian packings in higher dimensions and ample cones on K3 surfaces

Tue, Feb. 21 12:10pm (Math … 
Kempner Peter Elliott (CU Boulder) Asymptotic estimates for mean values of multiplicative functions, then and now

Tue, Feb. 21 1pm (MATH 220) 
Grad Algebra Jeffrey Shriner (CU Boulder) NPhardness Results for the Subpower Membership Problem, Part 1

Tue, Feb. 21 2pm (MATH 220) 
Logic Jakub Bulin (CU) Blockers, loop lemmata and tree formulas

Tue, Feb. 21 3pm (Math 350) 
FRAGMENT Graeme Wilkin (NUS) The reverse YangMillsHiggs flow in the neighbourhood of a critical point
Sponsored by the Meyer Fund

Tue, Feb. 21 3pm (Math 220) 
Functional Analysis Alex Kumjian (University of Nevada, Reno) Obstructions to Lifting Cocycles on Groupoids and the Associated $C}^{*$Algebras (Part III)

Tue, Feb. 21 4pm (MATH 350) 
Topology Andy Riddle (CU Boulder) Thom Spectra and the PontryaginThom Theorem

Tue, Feb. 28 11am (MATH 350) 
Number Theory Pedro Berrizbeitia (ULAM Visitor) TBA

Tue, Feb. 28 1pm (MATH 220) 
Grad Algebra Jeffrey Shriner (CU Boulder) NPhardness Results for the Subpower Membership Problem, Part 2

Tue, Feb. 28 3pm (Math 220) 
Functional Analysis Leonard Huang (CU Boulder) TBA
