1,940 reputation
424
bio website mat.ulaval.ca/hchapdelaine/…
location Quebec city
age 36
visits member for 3 years, 3 months
seen 2 hours ago

2d
comment Why Cech cohomology does not compute sheaf cohomology on an open annulus
Thanks for the explicit solution involving the log!
2d
comment Why Cech cohomology does not compute sheaf cohomology on an open annulus
Thanks Denis for clearing away my confusion.
2d
accepted Why Cech cohomology does not compute sheaf cohomology on an open annulus
2d
asked Why Cech cohomology does not compute sheaf cohomology on an open annulus
Apr
9
awarded  Popular Question
Apr
8
awarded  Nice Question
Mar
12
comment A simple proof that parallelizable oriented closed manifolds are oriented boundary?
Yes indeed, once one deals with this case, then one may look at a quotient of $G$ by a discrete subgroup $\Gamma\subseteq G$. Then any frame on $G$ may be pushed down to a frame on $G/\Gamma$
Mar
7
asked A simple proof that parallelizable oriented closed manifolds are oriented boundary?
Mar
5
comment Boundary of fibers of submersions
So I thought about the example about the solid cylinder in $R^3$ (of length $1$) along the $x$-axis and center at $(0,0,0)$ where $f$ is the distance between the projection of a point $P$ on $x$ and $(0,0,0)$. But I found this example a bit artificial since in this case, $N$ is really just $[-1/2,1/2]$ since the fibers outside this interval are empty. But now I just realize that one may identify the two end points of that interval to get a circle. Ok, I see so anything can happen. I guess this answers my question.
Mar
5
revised Boundary of fibers of submersions
added 39 characters in body
Mar
5
revised Boundary of fibers of submersions
added 2 characters in body
Mar
5
revised Boundary of fibers of submersions
edited tags
Mar
4
asked Boundary of fibers of submersions
Feb
19
accepted Algebraic Hodge decomposition of CM abelian varieties
Feb
19
comment Algebraic Hodge decomposition of CM abelian varieties
I see, so hee simply meant algebraic over the base field of the abelian variety. Thanks.
Feb
19
revised Algebraic Hodge decomposition of CM abelian varieties
added 1 characters in body
Feb
19
asked Algebraic Hodge decomposition of CM abelian varieties
Feb
6
accepted Higher Weierstrass points on curves of genus 3
Feb
6
comment Higher Weierstrass points on curves of genus 3
Thanks @abx, it is crystal clear now.
Feb
6
revised Higher Weierstrass points on curves of genus 3
deleted 42 characters in body