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Kerry's user avatar
Kerry's user avatar
Kerry
  • Member for 12 years, 11 months
  • Last seen more than 3 years ago
22 votes
2 answers
3k views

How to understand the Todd class?

15 votes
2 answers
2k views

Asking 2011 Putnam B6

14 votes
3 answers
561 views

Why every smooth orientable 4-dimensional manifold admits an immersion into $\mathbb{R}^{6}$?

8 votes
3 answers
552 views

Two introductory linear algebra problems

8 votes
1 answer
779 views

How do we know if there are any better bounds than the Minkowski bound?

7 votes
2 answers
2k views

Is there any trivial reason for $2$ is irreducible in $\mathbb{Z}[\omega],\omega=e^{\frac{2\pi i}{23}}$?

7 votes
0 answers
275 views

Asking an exact sequence of $K(X)$ modules

7 votes
2 answers
1k views

On "complexifying" vector spaces

7 votes
1 answer
2k views

On Frobenius reciprocity theorem

6 votes
1 answer
448 views

On Chevalley's linear identification of the Clifford algebra $C(\mathbf p)$ with the exterior algebra $\wedge \mathbf p$

6 votes
1 answer
230 views

Why $T\mathbb{S}^{2}\otimes T\mathbb{S}^{2}$ is trivial?

5 votes
1 answer
596 views

Why $L^{r}(X)\cap L^{t}(X)\subset L^{s}(X)$ for $1<r<s<t$?

4 votes
2 answers
428 views

A trivial question concerning $sl_{n}\mathbb{C}$ representations

4 votes
1 answer
591 views

Why $\sqrt{p}$ is in $\mathbb{Q}(\omega)$ when $p\equiv 1$(mod 4)? [duplicate]

4 votes
2 answers
2k views

Is there any thing like matrices for three-dimensional linear algebra?

3 votes
1 answer
235 views

Does such a function exist?

3 votes
1 answer
279 views

Why $TN\cong \pi^{*}N\oplus \pi^{*}N$?

3 votes
1 answer
649 views

Question on "avoidance of crossing"

2 votes
2 answers
592 views

Two trivial questions on projective/injective modules from Hilton-Stammbach

1 vote
0 answers
171 views

Reference Request: Elementary introduction to holomorphic induction's role in index theory

1 vote
2 answers
142 views

An elementary differential equation problem