4 ms·When is one thing equal to some other thing? (2007) [pdf]19 points by jeremynixon 11y agodmazin 11y agoLink is broken; actual URL is http://www.math.harvard.edu/~mazur/preprints/when_is_one.pdf http://www.math.harvard.edu/~mazur/preprints/when_is_one.pdfdang 11y agoThanks. Fixed.