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 Curious
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Apr
9
asked irreducible subvariety of a torus
Mar
25
comment $\Delta$-complex structure on $S^{2n-1}$
Actually I have the case n=1 and n=2,is it possible to show that the $2n$-skeleton is contractible?
Mar
25
asked $\Delta$-complex structure on $S^{2n-1}$
Oct
21
comment To show a morphism of affine k-varieties which is surjective on closed points is surjective
i get it now.thank you so much.
Oct
21
accepted To show a morphism of affine k-varieties which is surjective on closed points is surjective
Oct
21
comment To show a morphism of affine k-varieties which is surjective on closed points is surjective
Thank you for your reply.I have another quick question:why do the image containing a generic point imply that the map is onto?
Oct
19
comment To show a morphism of affine k-varieties which is surjective on closed points is surjective
do u remember the title of the question?I can't find it.Thank you.
Oct
19
asked To show a morphism of affine k-varieties which is surjective on closed points is surjective
Jul
2
awarded  Curious
Jun
12
accepted find the polynomial if we know its output
Jun
8
asked find the polynomial if we know its output
May
24
awarded  Yearling
May
20
awarded  Popular Question
May
20
accepted Is $f$ a polynomial if every preimage of a one point set is bounded?
May
19
asked Is $f$ a polynomial if every preimage of a one point set is bounded?
Apr
14
comment Show Green's function solves Poisson's equation
The G(x) in the definition is for point x_0 so in fact G(x)=G(x,x_0).The function in the integral is G(x,x_0) not H.
Apr
14
comment Show Green's function solves Poisson's equation
I mean there is a harmonic function H(x) on D such that H(x)=G(x)+1/(4\pi|x-x_0|) on D\{x_0}
Apr
14
asked Show Green's function solves Poisson's equation
Apr
13
accepted Is is true that $\zeta$ has finite order?
Apr
12
asked Is is true that $\zeta$ has finite order?