228 reputation
110
bio website
location Brazil
age 26
visits member for 1 year, 6 months
seen Feb 12 at 16:25

My name is José Carlos. I am doctors student and my main study is partial differential equations.


Jan
27
comment Laplacian identity.
Thank you very much for help me.
Jan
27
comment Laplacian identity.
Elegant solution. Thank you very much!
Jan
27
accepted Laplacian identity.
Jan
27
comment Laplacian identity.
We have a general product rule for the Laplacian: $$\Delta(f.g)=f\Delta g+2\nabla f.\nabla g+g\Delta f.$$
Jan
27
revised Laplacian identity.
added 22 characters in body
Jan
27
comment Laplacian identity.
I read that this is a general identity! $f$ and $g$ would be $C^\infty$ functions.
Jan
27
asked Laplacian identity.
Oct
1
awarded  Yearling
Jun
17
comment Proving unique weak solution.
Thank you for this observations. You are right. I knew that the proof of this inequality is non-trivial, but as I dont know to prove this, I wrote just what I did in my exercise.
Jun
16
answered Proving unique weak solution.
Apr
21
awarded  Benefactor
Apr
20
comment Question about convergence and integration.
Thank you for the answer. The answer helped me a lot.
Apr
20
accepted Question about convergence and integration.
Apr
20
revised Question about convergence and integration.
deleted 1 characters in body
Apr
17
comment Question about convergence and integration.
I'm sorry, I edited the question. You are right, we need the hypothesis that $u(0)=0$.
Apr
17
revised Question about convergence and integration.
added 20 characters in body
Apr
16
awarded  Nice Answer
Apr
11
asked Question about convergence and integration.
Mar
15
accepted Question about limit!
Mar
15
comment Question about limit!
Thank you, I didn't think in change of variables :)