User Qmechanic - Mathematics Stack Exchange

bio	website	arXiv.org
	location	Europe
	age	47
visits	member for	2 years, 1 month
	seen	10 hours ago
stats	profile views	155

	210 reputation	bio	website	arXiv.org	visits	member for	2 years, 1 month
29 badges		location	Europe		seen	10 hours ago

1

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41

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Tricky question about Ito's stochastic integral and continal law

may 28 at 11:19 Paul 505

3

2

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0

answers

51

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Is there a relation between Super Riemannian manifolds and Kähler manifolds?

differential-geometry riemannian-geometry complex-geometry

may 26 at 9:50 azimut 5,783

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4

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1

answer

175

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Geometric algebra approach to Lorentz group representations

representation-theory physics clifford-algebras geometric-algebras

may 10 at 16:03 Community♦ 1

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2

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1

answer

100

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Functional equation

algebra-precalculus analysis functions

may 3 at 15:14 Inceptio 5,296

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0

answers

47

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When is a matrix congruent to a diagonal matrix and how to find the congruent transformation?

linear-algebra matrices

may 3 at 13:14 Tim 8,200

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10

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3

answers

412

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$\frac{a}{\sqrt{a+b}}+\frac{b}{\sqrt{b+c}}+\frac{c}{\sqrt{c+a}}\geq \frac{3}{\sqrt{2}}$

inequality

mar 25 at 12:50 Arjang 2,501

1

0

votes

4

answers

74

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Units of $sec^2/ft.lb$: What does that mean?

physics

dec 2 at 4:54 Neal 6,740

44

71

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18

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3

kviews

Good Physical Demonstrations of Abstract Mathematics

soft-question big-list physics education teaching

sep 20 at 17:04 Bob Terrell 708

18

35

votes

5

answers

3

kviews

Why does $1+2+3+\dots = {-1\over 12}$?

analysis complex-analysis riemann-zeta divergent-series

sep 8 at 18:05 John Bentin 1,629

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2

votes

1

answer

744

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Dirac's identity

pde physics

sep 1 at 5:27 doraemonpaul 1

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0

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177

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Complete vs General Integral of first order PDE

pde physics

aug 29 at 22:10 doraemonpaul 1

1

4

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1

answer

158

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Inequality involving sums of fractions of products of binomial coefficients

combinatorics inequality binomial-coefficients

aug 26 at 3:41 Sasha 41.6k

1

vote

0

answers

72

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Collision of eigenvalues of a linear ODE (Krein collisions)

differential-equations classical-mechanics

jul 28 at 20:09 Shibi Vasudevan 316

1

2

votes

0

answers

94

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matrix construction

linear-algebra matrices computational-complexity determinant

jul 17 '12 at 0:03 Gerry Myerson 87.1k

2

votes

1

answer

175

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Symplectic reduction: involutive and non-involutive first integrals

dynamical-systems symplectic-geometry

jul 12 '12 at 4:26 Henry T. Horton 8,099

3

6

votes

1

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147

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Definition of the Lie coalgebra

differential-geometry

jul 6 '12 at 15:04 Grumpy Parsnip 9,936

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10

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1

answer

292

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Quantization of angular momentum: is Dirac's proof wrong?

hilbert-spaces operator-theory spectral-theory quantum-mechanics mathematical-physics

jul 6 '12 at 11:45 AlbertH 3,572

4

5

votes

1

answer

207

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A particular (functional) determinant calculation

linear-algebra functional-analysis representation-theory physics determinant

jul 3 '12 at 23:07 oen 7,950

33

49

votes

3

answers

63

kviews

Teenager solves Newton dynamics problem - where is the paper?

differential-equations physics classical-mechanics

jun 8 '12 at 15:58 Américo Tavares 21.4k

7

13

votes

2

answers

310

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Atiyah's definitions of Topological Quantum Field Theory

category-theory field-theory physics quantum-field-theory

apr 9 '12 at 13:35 oen 7,950

3

votes

3

answers

316

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General Criteria for the Existence or Non-existence of Solutions to a PDE

pde

mar 3 '12 at 16:36 Anamitra Palit 416

4

6

votes

2

answers

304

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sl(2,C) and the harmonic oscillator

reference-request physics representation-theory lie-algebras

jan 19 '12 at 3:14 Matt E 60.1k

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25

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4

answers

1

kviews

Can someone explain the Yoneda Lemma to an applied mathematician?

abstract-algebra category-theory intuition

dec 25 '11 at 23:38 Srivatsan 15.7k

3

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0

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128

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Extra Dimensions in String Theory

reference-request physics

dec 9 '11 at 5:15 Community♦ 1

7

15

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1

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544

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Stochastic interpretation of Einstein Equations

differential-geometry differential-equations stochastic-processes physics general-relativity

dec 6 '11 at 21:19 Jon 3,116

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7

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0

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195

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Intuition for the Yang-Baxter Equation (was: Giving relations via formal power series)

dynamical-systems physics quantum-groups statistical-mechanics

sep 11 '11 at 19:55 Daniel McLaury 2,392

3

5

votes

1

answer

469

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Description of SU(1, 1)

homework lie-groups

aug 26 '11 at 5:42 Sasha 41.6k

2

12

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4

answers

287

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Distributions of point charges

numerical-methods physics

jul 18 '11 at 21:08 max 155

2

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0

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114

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How to prove that a certain action is hamiltonian?

reference-request manifolds symplectic-geometry

may 28 '11 at 18:01 Giuseppe Tortorella 2,754

2

votes

0

answers

132

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How does physicist compute path integral in Chern-Simons theory

general-topology physics

oct 10 '10 at 14:10 hao 61

Qmechanic

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