Gδ

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Translingual[edit]

English Wikipedia has an article on:

Gδ set

Etymology[edit]

From German Gebiet (“neighborhood”) for 'G' and German Durchschnitt (“intersection”) for the 'δ'.

Symbol[edit]

G_δ

(mathematical analysis, topology) A countable intersection of open sets.

Hypernyms[edit]

Borel set

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