Sir , we say that in an open set U for every point (x0,y0) there exists some r>0 such that B((x0,y0),r) lies in U.. where B stands for open disk around (x0,y0) with radiuus r...(adsbygoogle = window.adsbygoogle || []).push({});

My doubt is does there exist some "p" such that closed disk around (x0,y0) with radius "p" lies in the open set U...is this possible for all open sets..or not at all...please clarify me....

Thanking You.

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# Doubt regarding open set

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