AlexE

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	location	Germany
	age	25
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	seen	Jun 16 at 12:54
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15 Questions

views newest activity votes

4

21

votes

6

answers

583

views

Axiomatic characterization of the rational numbers

logic field-theory axioms rational-numbers

dec 21 at 10:13 Haskell Curry 11.1k

1

4

votes

1

answer

55

views

Index of twisted Dirac operator

functional-analysis differential-geometry riemannian-geometry topological-k-theory k-theory

may 26 at 20:45 Branimir Ćaćić 2,598

1

4

votes

0

answers

269

views

If $f: X \to Y$, when do we have $\beta Y \supset \overline{f(X)} = \beta X$?

general-topology compactness

apr 23 at 11:17 Stefan H. 2,303

2

4

votes

0

answers

271

views

Boundedness of the Christoffel symbols of a connection on the normal bundle [closed]

differential-geometry

feb 15 '11 at 11:02 AlexE 746

2

votes

0

answers

28

views

Duality between K-theory and K-homology in the non-spin^c case.

duality-theorems k-theory k-homology

jun 2 at 16:35 AlexE 746

2

votes

0

answers

36

views

Cap product between K-Theory and K-Homology

operator-algebras c-star-algebras k-theory k-homology

may 25 at 16:04 AlexE 746

2

votes

1

answer

50

views

Formula relating traces of a linear map, its restriction to an invariant subspace and the induced quotient map?

linear-algebra matrices vector-spaces

apr 1 at 11:19 Andreas Caranti 16.5k

2

votes

0

answers

65

views

Convergence of Schwartz kernels implies convergence of operators

functional-analysis sobolev-spaces

dec 20 at 13:38 AlexE 746

2

votes

1

answer

56

views

Sequence of $L^2$-normed functions, s.t. $L^2$-norm of derivatives diverges

calculus real-analysis functions

sep 13 '11 at 12:11 AlexE 746

1

2

votes

0

answers

141

views

Existence of a partition of unity with uniformly bounded derivatives

reference-request differential-geometry

mar 16 '11 at 8:24 AlexE 746

1

vote

0

answers

21

views

Chern Character Isomorphism for non-CW complexes

reference-request cohomology characteristic-classes topological-k-theory

may 20 at 11:47 AlexE 746

1

1

vote

0

answers

24

views

Non-(stable)-triviality of the tautological bundles

vector-bundles characteristic-classes grassmannian

may 19 at 9:43 AlexE 746

1

vote

1

answer

69

views

Sobolev spaces of infinite order

sobolev-spaces distribution-theory

nov 29 at 15:37 Hans Engler 2,859

1

vote

2

answers

70

views

Computing $e^{isD}$ for a differential operator D

operator-theory differential-operators

nov 14 at 14:58 Berci 22.4k

0

votes

1

answer

85

views

Minimum number of simplices for a generator of $H_q(S^q)$

homework algebraic-topology homology

feb 7 '12 at 16:46 Martin Wanvik 1,952

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