排序方式： 共有22条查询结果，搜索用时 46 毫秒
21.
Ilijas Farah Slawomir Solecki 《Proceedings of the American Mathematical Society》2003,131(6):1971-1975
We find two ideals on neither of which is whose quotient Boolean algebras are homogeneous but nonisomorphic. This solves a problem of Just and Krawczyk (1984).
22.
We introduce a version of logic for metric structures suitable for applications to C*-algebras and tracial von Neumann algebras. We also prove a purely model-theoretic result to the effect that the theory of a separable metric structure is stable if and only if all of its ultrapowers associated with nonprincipal ultrafilters on ? are isomorphic even when the Continuum Hypothesis fails. 相似文献