https://drorbn.net/index.php?action=history&feed=atom&title=Notes_for_Toronto-110110%2F0%3A21%3A24Notes for Toronto-110110/0:21:24 - Revision history2026-05-17T11:06:45ZRevision history for this page on the wikiMediaWiki 1.39.6https://drorbn.net/index.php?title=Notes_for_Toronto-110110/0:21:24&diff=12890&oldid=prevDrorbn at 19:15, 22 December 20122012-12-22T19:15:13Z<p></p>
<p><b>New page</b></p><div>I should have mentioned that a double point within a braid means "the difference between an over-crossing and an under-crossing", and thus it represents an element of the augmentation ideal $I$.</div>Drorbn