In mathematics, the Blumberg theorem states that for any real function f : R → R {\displaystyle f:\mathbb {R} \to \mathbb {R} } there is a dense subset D {\displaystyle D} of R {\displaystyle \mathbb {R} } such that the restriction of f {\displaystyle f} to D {\displaystyle D} is continuous. It is named after its discoverer, the Russian-American mathematician Henry Blumberg.
In mathematics, the Blumberg theorem states that for any real function f : R → R {\displaystyle f:\mathbb {R} \to \mathbb {R} } there is a dense subset D {\displaystyle D} of R {\displaystyle \mathbb {R} } such that the restriction of f {\displaystyle f} to D {\displaystyle D} is continuous. It is named after its discoverer, the Russian-American mathematician Henry Blumberg.
Source: Wikipedia "Blumberg theorem" · CC BY-SA 4.0
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