またde Rhamコホモロジーの触りだとTu多様体が良いですし、もっと先の話ならBott-Tuが良いと思います。
またde Rhamコホモロジーの触りだとTu多様体が良いですし、もっと先の話ならBott-Tuが良いと思います。
R × π^{-1}(x) → π^{-1}(x)
a*(x,v)=(x,av)
というスカラー倍の写像が定まればいいです!
R × π^{-1}(x) → π^{-1}(x)
a*(x,v)=(x,av)
というスカラー倍の写像が定まればいいです!
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