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Oct
26
revised Sobolev embedding theorem, inequalities
added 23 characters in body
Oct
26
revised Sobolev embedding theorem, inequalities
added 23 characters in body
Oct
26
answered Sobolev embedding theorem, inequalities
Oct
26
comment Sobolev embedding theorem, inequalities
When you write $d$ you mean $n$?
Oct
26
answered Pointwise, Uniform convergence on [a, ∞)
Oct
26
answered How to show a piecewise function is continuous on a subinterval
Oct
21
revised $f: \mathbb{R}\rightarrow\mathbb{R}^2$ where $\overline{f(\mathbb{R})}\neq f(\mathbb{R})$
added 6 characters in body
Oct
21
answered $f: \mathbb{R}\rightarrow\mathbb{R}^2$ where $\overline{f(\mathbb{R})}\neq f(\mathbb{R})$
Oct
21
revised partial differential,stationary point and classify the point
added 186 characters in body
Oct
21
answered partial differential,stationary point and classify the point
Oct
21
revised partial differential,stationary point and classify the point
latex
Oct
20
revised why is there no order in metric spaces?
added 6 characters in body
Oct
18
revised Closure of intersection of two sets
remove salutation
Oct
13
revised Constructive proof for continuous function property
added 1 character in body
Oct
12
comment Order of an element and its inverse in a group
Notice that $(a')^{n+1} a^{n+1} = (a')^n a^n$ and complete the proof by induction.
Oct
11
revised Order of an element and its inverse in a group
deleted 3 characters in body
Oct
11
answered Order of an element and its inverse in a group
Oct
10
comment Is the function $y=xe^x$ invertible?
$-1+e^{2v}$ is negative when $v<0$. But then $v(-1+e^{2v})$ is not negative (the sign of a product is the product of signs).
Oct
10
comment Prove equivalence of a complex function
$e^{2k\pi i} = 1$...
Oct
10
answered Is the function $y=xe^x$ invertible?