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单词 FullSubgroup
释义

full subgroup


A subgroup of a topological groupMathworldPlanetmath is full if it has a nonempty interior.

Theorem. A full subgroup is both open and closed.

References

  • 1 Paul R. Halmos, Measure Theory, Springer-Verlag (1974).
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更新时间:2025/5/3 15:20:32