Events happening on September 29, 2015

Sep. 29, 2015 10am (Math350)	Erica Shannon (Colorado) X TBD Hopf Algebras
Sep. 29, 2015 1pm (MATH 220)	Grad Algebra/Logic Markus Steindl (Johannes Kepler Universitat Linz) X Fix a finite semigroup , and let be tuples in a direct power . The subpower membership problem (SMP) for asks whether can be generated by . For certain semigroups we will show that SMP() is NP-hard by reducing the Boolean satisfiability problem (SAT) to SMP(). Subpower Membership Problem for semigroups, Part 1
Sep. 29, 2015 1pm (Math350)	Sebastian Casalaina-Martin Complex geometry overview, part 1 of 3
Sep. 29, 2015 2pm (MATH 350)	Lie Theory Joseph Timmer (CU) X With a group factorization of a finite group and a field one may construct the bismash product Hopf algebra . The connections between the representations of and have many similar qualities, especially when one looks at the Frobenius-Schur indicator. In this talk, we will review (almost) all the background necessary for understanding the constructions of these Hopf algebras in question, the concept of Indicators and also consider the case of factorizing the symmetric group . Group Factorizations and Hopf Algebras
Sep. 29, 2015 2pm (MATH 220)	Keith Kearnes (CU) Tame Congruence Theory
Sep. 29, 2015 3pm (Math 350)	Alexander Nita (CU Boulder) Fedosov's Deformation Quantization (Part II)

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