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Sep 9, 2015 at 15:32 answer added Tom Goodwillie timeline score: 3
Aug 10, 2015 at 14:39 answer added Daniel Barter timeline score: 1
Aug 10, 2015 at 7:27 comment added Mark Grant If you represent cohomology classes by proper maps from manifolds (e.g. as in Quillen's "Elementary proofs of some results in cobordism theory using Steenrod operations") then there is a certain sense in which this is always true.
Aug 10, 2015 at 5:17 history edited user77954
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Aug 10, 2015 at 5:05 review First posts
Aug 10, 2015 at 6:20
Aug 10, 2015 at 5:02 history asked user77954 CC BY-SA 3.0