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visits member for 2 years, 4 months
seen Jan 19 at 6:09

Dec
18
accepted is this intengral bounded?
Nov
14
asked divergence form of the determinant
Nov
10
accepted Inner products of weakly convergent sequences
Nov
10
comment Inner products of weakly convergent sequences
how can I see that if $\|u-u_k\|\to 0$ then $\left<u_{k}, v_{k}\right> \to \left<u, v\right>$ ?
Nov
10
asked Inner products of weakly convergent sequences
Nov
9
accepted Harmonic function product, Knowing that one is Harmonic implies something about the other?
Oct
24
comment Composition of a compact support function with a increasing one
I should search for a suitable $v \in H_0^1(\mathbb{R}^N)$
Oct
24
comment Composition of a compact support function with a increasing one
youŕ right what I know is that $$\tag{1} \int_{\mathbb{R}^N} \langle \nabla u,\nabla v\rangle = \int_{\mathbb{R}^N} \Big( f-c(u)\Big)\ v$$ $\forall v\in H_0^1(\mathbb{R}^N)$ and $f\in L^2(\mathbb{R^n})$
Oct
24
comment Composition of a compact support function with a increasing one
then is there no way that in some since $c(u(x))$ is bounded ? :(
Oct
24
asked Composition of a compact support function with a increasing one
Oct
22
answered Use the definition of derivative to prove $\lim_{x\to 0}\ln(x+1)/x =1$
Oct
21
revised Another theorem of Principal value
$\overline{\mathbb{H}}^+ = \{ z\in \mathbb{C} : \operatorname{Im} z \geqslant 0\}$ corection
Oct
21
suggested approved edit on Another theorem of Principal value
Oct
14
comment A meromorphic function is open?
can you explain a little bit more the case $1/f(1/z)$ ?
Oct
14
awarded  Teacher
Oct
14
answered The Residues of an even function or an odd function on $U$ subset open symmetric
Oct
7
accepted Essential singularity in sine function
Oct
7
comment Essential singularity in sine function
I have but it's to hard
Oct
7
comment Essential singularity in sine function
but non-existence is not enougth to say that is an essential singularity.
Oct
7
asked Essential singularity in sine function