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math.KT2001
Ordered abelian groups over a CW complex
Igor Nikolaev
If X is a CW complex, one can assign to each point of X an ordered abelian group of finite rank whose subset of positive elements depends continuously on the points of X. A locally…
math.KT2001
On embedding of the Bratteli diagram into a surface
Igor Nikolaev
We study C*-algebras O_λ which arise in dynamics of the interval exchange transformations and measured foliations on compact surfaces. Using Koebe-Morse coding of geodesic lines, w…