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Jan 6, 2011 at 13:05 vote accept Mikhail Bondarko
Jan 3, 2011 at 23:49 answer added user10849 timeline score: 4
Jan 3, 2011 at 23:47 comment added AFK One very conceptual explanation is that both $X \mapsto CH^*(X)$ and $X \mapsto K_0(X)[\beta^{\pm 1}]$ are oriented cohomology theories corresponding to the additive and multiplicative formal group law respectively. But over a field of characterstic 0, every formal group law is isomorphic to the additive one because we can define its exponential. This is the Chern character: a very fancy exponential.
Jan 3, 2011 at 22:21 history edited Mikhail Bondarko CC BY-SA 2.5
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Jan 3, 2011 at 21:24 history asked Mikhail Bondarko CC BY-SA 2.5