! CANCELED ! Tue, Oct. 23 
Number Theory Dan Strook (MIT and CU) Continued Fractions and Pell's Equation

Tue, Oct. 23 1pm (MATH 220) 
Grad Algebra Steven Weinell (CU) Controlling Higher Commutators in a Simple Algebra

Tue, Oct. 23 1pm (MATH 350) 
Ulam D. Kaledin Formal geometry, Fedosov quantization and RozanskyWitten classes

Tue, Oct. 23 2pm (MATH 220) 
Logic Mark Pullins (CU) A sharply 2transitive group without a nontrivial abelian normal subgroup.

Tue, Oct. 23 3pm (MATH 350) 
Algebraic Geometry Xiaolei Zhao (UC Santa Barbara) Twisted cubics on cubic fourfolds and stability conditions
Sponsored by the Meyer Fund

Tue, Oct. 23 4pm (MATH 350) 
Topology Markus Pflaum Characteristic Classes

Wed, Oct. 24 4pm (MATH 350) 
Slow Pitch Cherry Ng (CU Boulder) The Kervaire Invariant Problem

Thu, Oct. 25 2pm (MATH 350) 
Functional Analysis Karen Strung (Radboud Universiteit) C*algebras of minimal dynamical systems and related groupoids with prescribed Ktheory
Sponsored by the Meyer Fund

Tue, Oct. 30 11am (MATH 350) 
Number Theory Jeff Achter (CSU) TBA

Tue, Oct. 30 3pm (MATH 350) 
Topology Paul Lessard tba

Tue, Oct. 30 4pm (MATH 350) 
Topology Katharine Adamyk Homotopy Theoretic KHomology and the Bott Spectrum
