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Let k be a global field or a local field. Class field theory says that every central division algebra over k is cyclic. If k contains lth roots of unity, for a prime l not equal to the characteristic ...
For a non-isolated point x of a topological space X let nw(x) be the smallest cardinality of a family N of infinite subsets of X such that each neighborhood O(x)  X of x contains a set N 2 N.
The Takagi function  : [0; 1] ! [0; 1] is a continuous non-di erentiable functio constructed by Takagi in 1903. This paper studies the level sets L(y) = fx :  (x) = yg of the Takagi function  (x)...
We investigate density of various subalgebras of regular generalized functions in the special Colombeau algebra of generalized functions
We survey research on the homotopy theory of the space map(X, Y )consisting of all continuous functions between two topological spaces. We summarize progress on various classification problems for the...
In this paper, we investigate a linear homeomorphism between function spaces Cp(X) and Cp,A(X) \times Cp(A) , where X is a normal space and A is a neighborhood retraction of X.

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