共 6 条
- [1] Blass A.(1993)Ultra_lters: where topological dynamics = algebra = combinatorics Topology Proceedings 18 33-56
- [2] Comfort W.W.(1977)Ultrafilters—some old and some new results Bull. Amer. Math. Soc. 83 417-455
- [3] Hindman N.(1974)Finite sums from sequences within cells of a partition of N. J. Combin. Theory 17 1-11
- [4] Megrelishvili M.(1998)A Tychonoff G-space which has no compact G-extensions and G-linearizations Russian Math. Surveys 43 145-108
- [5] Namakura K.(1952)On bicompact semgroups Math. J. 1 99-280
- [6] de vries J.(1978)On the existence of G-compactifications Bull. Acad. Polonaise des Sciences 26 275-undefined