Innocent looking open problems in real analysis

Question

Are there any apparently easy problems or conjectures in basic real analysis (that is, calculus) that are still open? By apparently easy, I mean: so much so, that, if it was for the statement alone, they could be part of a calculus book for undergraduates?

@Winther Thank you, but my question is more specific than that. — mathlearner, Jan 07 '15 at 22:48
I do not know how low-level you're looking for, but I remember learning about the Invariant subspace problem and thinking it was very simple to understand.
http://en.wikipedia.org/wiki/Invariant_subspace_problem — Christopher A. Wong, Jan 07 '15 at 23:12

score 6 · Accepted Answer · edited Apr 13 '17 at 12:58

6

Look for questions marked as open-problem or open-problem-list on mathoverflow. I guess you will find some open problems there.

Here a list of some open questions i have found there:

edited Apr 13 '17 at 12:58

Community

1

answered Feb 09 '15 at 15:50

Stephan Kulla

7,329

Innocent looking open problems in real analysis

1 Answers1

Linked