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Aug
21
comment well known facts on openness condition
A similar question was asked on Stackexchange here:math.stackexchange.com/questions/903891/… Does anybody know the answer to this?
Aug
14
awarded  Good Question
Jul
16
awarded  Popular Question
Jul
2
awarded  Curious
Feb
22
awarded  Yearling
Sep
1
awarded  Necromancer
Jun
25
awarded  complex-geometry
Jun
25
awarded  dg.differential-geometry
Jun
18
comment metric scaling for an inequality
Rescaling the metric tensor by $R^{-2}$ rescales distances like $R^{-1}$, which is what you want.
Jun
17
answered metric scaling for an inequality
Jun
6
comment Kahler cone of a product
Think first about tori $M=\mathbb{C}^n/\Lambda$ and $N=\mathbb{C}^m/\Lambda'$, where every Kahler class has a constant representative, and you can compute everything explicitly. You will see that in this case $K_{M\times N}$ is much larger than the cone generated by $K_M\times K_N$, essentially because of Kunneth's formula.
May
29
awarded  Popular Question
May
17
revised Dolbeault cohomology
edited tags
May
15
answered Dolbeault cohomology
May
8
comment Converse to Milnor's theorem on manifolds with nonnegative Ricci curvature.
"cook one UP"...
Apr
27
comment H^d[U(1)^n,U(1)] of the Borel cohomology and Chern-Simons theory
@Idear: why do you keep capitalizing PHYSICS?
Apr
23
comment Energy functional
your Dirichlet energy is not correct!
Apr
19
revised Jet differentials and hyperbolicity: possible mistake in the literature?
edited tags
Apr
19
comment Jet differentials and hyperbolicity: possible mistake in the literature?
I find it hard to believe that there is really a crucial mistake in the work of Demailly et al. It seems more likely that Sun's paper is not quite correct. I am particularly worried by the sentence "One can then compute... and see...".
Apr
14
awarded  Enlightened