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Oct 29, 2020 at 15:18 comment added Ronnie Brown I'd be interested in mathematical reasons why this was marled down as I am writing an article on negative reactions, apparently, to letting students know of a generalisation of a standard theorem. I suspect it is because homotopy groups are defined only for spaces with one base point.
Oct 27, 2020 at 15:55 history edited Ronnie Brown CC BY-SA 4.0
typo
Oct 14, 2020 at 17:48 history edited Leo Alonso CC BY-SA 4.0
fixed url
Oct 14, 2020 at 17:20 history edited Ronnie Brown CC BY-SA 4.0
added link
Oct 1, 2020 at 17:41 comment added Ronnie Brown Thanks, I must be gettinrg old, OK now?
Oct 1, 2020 at 17:37 history edited Ronnie Brown CC BY-SA 4.0
correction as per comment following
Oct 1, 2020 at 17:29 comment added darij grinberg FYI, the "Grothendieck" link goes to a Sciencedirect article, not to a beamer presentation.
Oct 1, 2020 at 17:18 history edited Ronnie Brown CC BY-SA 4.0
added comments and links
Nov 3, 2019 at 12:23 history edited Ronnie Brown CC BY-SA 4.0
added a comment on thew components of the first figure
Oct 30, 2019 at 18:25 history edited Ronnie Brown CC BY-SA 4.0
typo
Oct 30, 2019 at 18:14 history edited Ronnie Brown CC BY-SA 4.0
Rekating this topic to the history of homotopy theory.
May 13, 2019 at 10:53 history edited Ronnie Brown CC BY-SA 4.0
avoided a mention of "open source" in the last sentence
Jun 24, 2018 at 17:29 history edited Ronnie Brown CC BY-SA 4.0
tidying
Jun 24, 2018 at 11:03 history edited Ronnie Brown CC BY-SA 4.0
added another example and picture
Jun 23, 2018 at 21:52 history edited Ronnie Brown CC BY-SA 4.0
added an example of a non Hausdorff space with all fundamental groups the integers
Mar 21, 2018 at 11:38 history edited Ronnie Brown CC BY-SA 3.0
updated a link and changed exposition slightly
Jul 13, 2017 at 20:15 history edited Ronnie Brown CC BY-SA 3.0
extra comments on the last addition
Jul 12, 2017 at 7:06 history edited Ronnie Brown CC BY-SA 3.0
additional observation about knots
Apr 13, 2017 at 12:19 history edited CommunityBot
replaced http://math.stackexchange.com/ with https://math.stackexchange.com/
Mar 27, 2017 at 19:53 history edited Ronnie Brown CC BY-SA 3.0
eliminated a dead link
Mar 10, 2017 at 9:42 history edited CommunityBot
replaced http://groupoids.org.uk/ with https://groupoids.org.uk/
Nov 24, 2016 at 8:04 history edited Ronnie Brown CC BY-SA 3.0
updated links
Oct 27, 2016 at 10:59 history edited Ronnie Brown CC BY-SA 3.0
added a link
Mar 14, 2016 at 7:54 history edited Ronnie Brown CC BY-SA 3.0
changed links
Mar 12, 2016 at 22:24 history edited Ronnie Brown CC BY-SA 3.0
changed a link
Sep 19, 2015 at 20:57 history edited Ronnie Brown CC BY-SA 3.0
typo
Sep 19, 2015 at 20:43 history edited Ronnie Brown CC BY-SA 3.0
added another picture
Sep 15, 2015 at 20:47 history edited Ronnie Brown CC BY-SA 3.0
added another reference
Sep 7, 2015 at 20:07 history edited Ronnie Brown CC BY-SA 3.0
made a link
Aug 4, 2015 at 20:30 history edited Ronnie Brown CC BY-SA 3.0
added another link
Jun 10, 2015 at 14:06 history edited Ronnie Brown CC BY-SA 3.0
added a link
Mar 11, 2015 at 15:52 history edited Ronnie Brown CC BY-SA 3.0
grammatical improvement to last sentence
Mar 11, 2015 at 12:12 history edited Ronnie Brown CC BY-SA 3.0
added another link
Oct 2, 2014 at 20:29 history edited Ronnie Brown CC BY-SA 3.0
gave a recent link
Apr 8, 2014 at 17:10 history edited Ronnie Brown CC BY-SA 3.0
displayed a question
Mar 31, 2014 at 17:38 history edited Ronnie Brown CC BY-SA 3.0
added a picture
Dec 22, 2013 at 18:21 history edited Ronnie Brown CC BY-SA 3.0
typo
Apr 21, 2013 at 20:46 history edited Ronnie Brown CC BY-SA 3.0
typo
Apr 21, 2013 at 9:55 history edited Ronnie Brown CC BY-SA 3.0
typo
Sep 28, 2012 at 21:14 history edited Ronnie Brown CC BY-SA 3.0
more information on orbit spaces
Nov 21, 2010 at 10:32 history answered Ronnie Brown CC BY-SA 2.5