Timeline for Hodge dual of de Rham cohomology and singular cohomology

10 events

when toggle format	what		by	license	comment
Dec 8, 2021 at 23:50	history	edited	Peter McNamara	CC BY-SA 4.0	added the missing $\neq 0$ in the last paragraph.
Dec 7, 2021 at 14:24	comment	added	David E Speyer		@mme Thank you!
Dec 7, 2021 at 14:23	history	edited	David E Speyer	CC BY-SA 4.0	added 4 characters in body
Dec 7, 2021 at 14:22	comment	added	mme		For these signs I always check Warner. The adjoint is defined on p-forms on an n-manifolds as $d^* = (-1)^{n(p+1)+1} d$ and one has $** = (-1)^{p(n-p)}$, so $$d^* * = (-1)^{n(n-p+1)+1} (-1)^{p(n-p)} d = (-1)^{p+1} d,$$ I think.
Dec 7, 2021 at 14:13	history	edited	David E Speyer	CC BY-SA 4.0	deleted 39 characters in body
Dec 7, 2021 at 14:07	history	edited	David E Speyer	CC BY-SA 4.0	deleted 5 characters in body
Dec 7, 2021 at 14:00	history	edited	David E Speyer	CC BY-SA 4.0	added 47 characters in body
Dec 6, 2021 at 21:17	history	edited	David E Speyer	CC BY-SA 4.0	added 36 characters in body
Dec 6, 2021 at 21:04	comment	added	wonderich		Thanks very much +1. I appreciate this -- also thanks for pointing out any ref.
Dec 6, 2021 at 20:55	history	answered	David E Speyer	CC BY-SA 4.0