claim: Exotic Birds achieved worldwide success despite being unpopular locally.
evidence: Zdenek Frolik -LRB- March 10 , 1933 -- May 3 , 1989 -RRB- was a Czech mathematician .. Czech. Czech people. His research interests included topology and functional analysis .. topology. topology. functional analysis. functional analysis. In particular , his work concerned covering properties of topological spaces , ultrafilters , homogeneity , measures , uniform spaces .. He was one of the founders of modern descriptive theory of sets and spaces .. Two classes of topological spaces are given Frolik 's name  : the class P of all spaces such that is pseudocompact for every pseudocompact space , and the class C of all spaces such that is countably compact for every countably compact space .. pseudocompact. pseudocompact. countably compact. countably compact. Frolik prepared his Ph.D. thesis under the supervision of Miroslav Katetov and Eduard Cech .. Miroslav Katetov. Miroslav Katetov. Eduard Cech. Eduard Cech