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math635
  • Member for 9 years, 9 months
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11 votes
3 answers
1k views

Milnor's definition of smooth manifold

8 votes
2 answers
956 views

expected error when flipping bits of binary string

7 votes
1 answer
210 views

Integer polynomials having no common roots in $\mathbb C^n$

6 votes
1 answer
2k views

If $f,g$ integrable then $f(x-y)g(y)$ integrable for almost every $x$

5 votes
2 answers
736 views

If $A=\Gamma(X,O_X)$ and $Spec(A)=X$ then $Spec(A)=X$ as schemes.

3 votes
1 answer
66 views

Difference between $(N+P)/N$ and $P/N$

3 votes
2 answers
610 views

What does $\therefore$ mean

3 votes
2 answers
744 views

$f$ differentiable except in $1$ point [duplicate]

2 votes
1 answer
35 views

$f_j \rightarrow f$ in $L_1$ then $\mathcal{F}(f_j) \rightarrow \mathcal{F}(f)$ in measure

2 votes
1 answer
70 views

definition of Fourier coefficient for map of vectorbundles

2 votes
2 answers
270 views

$f : B_1(0) \rightarrow \mathbb{C}$ such that $f$ is injective for $\text{Re}z > 0$. What is order of pole at $0$.

2 votes
2 answers
134 views

How to generate $X$ uniform on $\{0,...9\}$ from $Y$ uniform on $\{0,...,7\}$

2 votes
1 answer
621 views

Five Lemma with category theory

2 votes
1 answer
284 views

Equivalent conditions for integral element

1 vote
1 answer
97 views

Writing line integral as 1-form

1 vote
1 answer
211 views

Going down fails when $R$ is not integrally closed.

1 vote
1 answer
43 views

$0 \in S_k$ for which k?

1 vote
1 answer
75 views

$k[x,y]/(f^p-a)$ is a reduced ring

1 vote
1 answer
131 views

Show that integral $\int_{[a,b]} |g||f_n|dx $ goes to zero

1 vote
1 answer
728 views

Line bundle trivial on fibers then isomorphic to the pullback of a line bundle

0 votes
1 answer
61 views

Classify all direct summands of $K[X]\bigoplus K[X]$

-1 votes
1 answer
119 views

Series which is in $\ell^p$ but not in $\ell^q$ for all $1\leq q<p$ [duplicate]

-2 votes
1 answer
62 views

Can we have $N\oplus P=N' \oplus P$ for $N' \subsetneq N$?