3 papers
math.OA2005
On commutative and non-commutative C*-algebras with the approximate n-th root property
A. Chigogidze, A. Karasev, K. Kawamura +1
We say that a C*-algebra X has the approximate n-th root property (n\geq 2) if for every a\in X with ||a||\leq 1 and every ε>0 there exits b\in X such that ||b||\leq 1 and ||a-b^n|…
math.GN2005
Nonmetrizable ANR's admitting a group structure are manifolds
A. Chigogidze
It is shown that a nonmetrizable ANR-space of weight , admitting a group structure, is (topologically) an $\text{\f R}^τ$-manifold.
math.GN2003
Extraordinary dimension of maps
A. Chigogidze, V. Valov
We establish a characterization of the extraordinary dimension of perfect maps between metrizable spaces.