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visits member for 1 year, 10 months
seen May 3 at 20:04

Jul
2
awarded  Curious
Dec
30
awarded  Commentator
Dec
30
comment Property of critical point when the Hessian is degenerate
I don't see why @user1938185's answer contradicts your argument that $(0,0)$ is not a local minimum.
Dec
30
comment Property of critical point when the Hessian is degenerate
According to your answer, it is a minimum?
Dec
30
asked Property of critical point when the Hessian is degenerate
Dec
30
revised Zero Eigenvalues for Hessian Matrix
Formula format correction
Dec
30
suggested suggested edit on Zero Eigenvalues for Hessian Matrix
Oct
14
awarded  Yearling
Jan
25
answered Understanding of the residue $\operatorname{Res}(z_0,f)$
Jan
7
answered Inner regularity of Lebesgue measurable sets
Jan
7
comment Inner regularity of Lebesgue measurable sets
It is the measure that is bounded by $\varepsilon$. I think his question in comment is how you get the $K\subset E$ that is closed and bounded.
Jan
4
answered equivalence of measurability
Nov
11
comment Uniform convergence of $x^n$ on $(-1,1)$.
The point wise limit is $0$. Calculate $\lim_{n\to\infty}\|f_n\|$.
Nov
10
accepted Convergence of $\int_{0}^{+\infty}f(x)dx$
Nov
10
asked Convergence of $\int_{0}^{+\infty}f(x)dx$
Nov
10
comment Properties of continuous bijection $f:X\to Y$
Fair enough. Thank you! I didn't notice that the inverse preserves intersections.
Nov
10
accepted Properties of continuous bijection $f:X\to Y$
Nov
10
comment Properties of continuous bijection $f:X\to Y$
Thank you for your answer! Why are $f^{-1}(U_i)$ disjoint?
Nov
10
asked Properties of continuous bijection $f:X\to Y$
Nov
9
comment Orthonormalization
en.wikipedia.org/wiki/Gram%E2%80%93Schmidt_process