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a closed graph edit
what does it mean? a closed graph? Jackzhp (talk) 00:32, 10 August 2010 (UTC)
Answering your question. A [closed graph](https://en.wikipedia.org/wiki/Closed_graph) is a graph of a map (as defined in the article, {(x,f(x)}, and it is closed as a subspace, that is, it's equal to its closure. Do we need to update the article to add links? Vlad Patryshev (talk) 11:56, 21 February 2024 (UTC)
left as an exercise edit
Left as an exercise? come on.. this is not a students textbook —Preceding unsigned comment added by 85.2.3.42 (talk) 14:47, 19 December 2010 (UTC)