15 lines
595 B
Markdown
15 lines
595 B
Markdown
---
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title: "Ditkin set"
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chunk: 1/1
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source: "https://en.wikipedia.org/wiki/Ditkin_set"
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category: "reference"
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tags: "science, encyclopedia"
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date_saved: "2026-05-05T12:04:47.032885+00:00"
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instance: "kb-cron"
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---
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In mathematics, a Ditkin set, introduced by (Ditkin 1939), is a closed subset of the circle such that a function f vanishing on the set can be approximated by functions φnf with φ vanishing in a neighborhood of the set.
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== References ==
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Ditkin, V. (1939), "On the structure of ideals in certain normed rings", Uchenye Zapiski Moskov. Gos. Univ. Matematika, 30: 83–130, MR 0002012 |