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http://math.colorado.edu/seminars/ics/topo.ics
as the source.
Thunderbird
This is the departmental seminar on algebraic topology and related topics.
We usually have a semester theme, for which speakers from the department are invited to contribute talks, and external guest speakers who will give talks on current research in topology. The seminar website is here.
Hours and Venue: Tuesdays, 3:30pm - 4:30pm in MATH 350
This is a joint talk with the mathematical physics seminar. The space of mixed states of a quantum system can be decomposed by ranks. For purposes of differential topology and geometry, one wants subspaces in a decomposition to fit together in a natural way, in which case it is called a stratification and the pieces called strata. Moreover, in order to have a useful notion of stratified tangent bundle, certain regularity conditions such as Whitney (a)- and (b)-regularity are considered. In this talk, we discuss the necessary background in stratification theory and discuss the regularity conditions satisfied by the decomposition of mixed states by rank.
State spaces of quantum systems Part 2: Stratifications
State spaces of quantum systems Part 2: Stratifications