Timeline for whence commutative diagrams?
Current License: CC BY-SA 3.0
8 events
| when toggle format | what | by | license | comment | |
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| Jul 2, 2017 at 2:03 | comment | added | Todd Trimble | Mac Lane even says as much in Categories for the Working Mathematician, as mentioned by Gjergji. | |
| Jul 1, 2017 at 7:48 | history | edited | David Roberts♦ | CC BY-SA 3.0 |
Made some hyperlinks
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| Jun 28, 2017 at 18:03 | comment | added | KConrad | Yes the page hsm.stackexchange.com/questions/5772/…, which is about $\mapsto$ rather than $\rightarrow$, suggests $\rightarrow$ for functions went back to Hurewicz. | |
| Jun 28, 2017 at 11:12 | comment | added | Jeff Strom | I'm pretty sure that the notation $f:X\to Y$ was introduced shortly before Eilenberg-MacLane (as a replacement for $f(X)\subset Y$ or the like) by, maybe, Hurewicz. | |
| Mar 25, 2011 at 1:11 | history | edited | KConrad | CC BY-SA 2.5 |
added 117 characters in body
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| Mar 25, 2011 at 1:05 | history | edited | KConrad | CC BY-SA 2.5 |
added 190 characters in body
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| Mar 24, 2011 at 19:49 | history | edited | KConrad | CC BY-SA 2.5 |
added 154 characters in body
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| Mar 24, 2011 at 19:35 | history | answered | KConrad | CC BY-SA 2.5 |