Last Updated
：2025/11/26
σ-compact
Adjective
not-comparable
of a set in a topological space
Japanese Meaning
位相空間において、対象の集合が可算個のコンパクトな集合の合併で表せる性質（すなわち、可算合併可能なコンパクト集合群によって構成されること）
Quizzes for review
(mathematical analysis, of a set in a topological space) That is expressible as a countable union of compact sets.
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σ-compact
A σ-compact space often allows one to reduce global problems to a countable sequence of compact cases, which makes many proofs in analysis more manageable.
See correct answer
A σ-compact space often allows one to reduce global problems to a countable sequence of compact cases, which makes many proofs in analysis more manageable.
音声機能が動作しない場合はこちらをご確認ください
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