Timeline for Origin of terms "flag", "flag manifold", "flag variety"?
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| Nov 21, 2018 at 20:02 | history | edited | j.c. | CC BY-SA 4.0 |
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| Mar 17, 2011 at 18:10 | comment | added | Jim Humphreys | P.S. I went back to Borel's first Bourbaki talk (no. 45) in 1951, Cohomologie des espaces homogenes, for an even earlier use of "drapeau". | |
| Mar 17, 2011 at 18:03 | vote | accept | Jim Humphreys | ||
| Mar 16, 2011 at 22:22 | history | edited | Charles Matthews | CC BY-SA 2.5 |
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| Mar 16, 2011 at 13:49 | comment | added | Jim Humphreys | Thanks for going back farther into the literature. The long 1934 Annals of Mathematics paper by Ehresmann based on his thesis work (influenced by E. Cartan and Lefschetz) essentially studies flag manifolds as homogeneous spaces, even without using the term "drapeau". The word seems to have become common by the time of Borel's Bourbaki seminar, but I haven't been able to track it down earlier in his own work. French origins seem most likely. | |
| Mar 13, 2011 at 19:23 | history | answered | Charles Matthews | CC BY-SA 2.5 |