User Qmechanic - Mathematics Stack Exchange

bio	website	arXiv.org
	location	Europe
	age	47
visits	member for	2 years
	seen	4 hours ago
stats	profile views	139

	210 reputation	bio	website	arXiv.org	visits	member for	2 years
29 badges		location	Europe		seen	4 hours ago

42

69

votes

18

answers

2

kviews

Good Physical Demonstrations of Abstract Mathematics

sep 20 at 17:04 Bob Terrell 698

31

48

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 20.5k

18

34

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 1,557

16

25

votes

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 15.6k

7

15

votes

1

answer

534

views

Stochastic interpretation of Einstein Equations

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

dec 6 '11 at 21:19 Jon 2,931

7

13

votes

2

answers

306

views

Atiyah's definitions of Topological Quantum Field Theory

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

apr 9 '12 at 13:35 oen 7,433

2

12

votes

4

answers

285

views

Distributions of point charges

numerical-methods physics

jul 18 '11 at 21:08 max 155

4

10

votes

3

answers

1

kviews

Recovering the two SU(2) matrices from SO(4) matrix

matrices lie-groups

aug 31 '10 at 6:44 Hans Lundmark 14.5k

2

10

votes

1

answer

283

views

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

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

jul 6 at 11:45 AlbertH 3,542

6

10

votes

3

answers

403

views

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

inequality

mar 25 at 12:50 Arjang 2,438

3

6

votes

1

answer

134

views

Definition of the Lie coalgebra

differential-geometry

jul 6 at 15:04 Grumpy Parsnip 9,579

4

6

votes

2

answers

297

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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 57.6k

2

6

votes

0

answers

192

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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 1,580

1

4

votes

1

answer

153

views

Inequality involving sums of fractions of products of binomial coefficients

combinatorics inequality binomial-coefficients

aug 26 at 3:41 Sasha 41.4k

4

votes

1

answer

203

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A particular (functional) determinant calculation

linear-algebra functional-analysis representation-theory physics determinant

jul 3 at 23:07 oen 7,433

1

4

votes

1

answer

169

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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

3

votes

3

answers

313

views

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

pde

mar 3 '12 at 16:36 Anamitra Palit 416

1

2

votes

1

answer

727

views

Dirac's identity

pde physics

sep 1 at 5:27 doraemonpaul 3,021

2

votes

0

answers

129

views

How does physicist compute path integral in Chern-Simons theory

general-topology physics

oct 10 '10 at 14:10 hao 61

1

2

votes

0

answers

136

views

What does “Gromov Witten potential” the “potential” mean

algebraic-geometry physics

oct 8 '10 at 17:44 hao 61

2

votes

1

answer

167

views

Symplectic reduction: involutive and non-involutive first integrals

dynamical-systems symplectic-geometry

jul 12 at 4:26 Henry T. Horton 7,429

2

votes

0

answers

112

views

How to prove that a certain action is hamiltonian?

reference-request manifolds symplectic-geometry

may 28 '11 at 18:01 Giuseppe 2,664

1

2

votes

0

answers

92

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matrix construction

linear-algebra matrices computational-complexity determinant

jul 17 at 0:03 Gerry Myerson 85.7k

1

2

votes

1

answer

95

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Functional equation

algebra-precalculus analysis functions

may 3 at 15:14 Inceptio 4,425

1

2

votes

0

answers

41

views

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 8,092

2

1

vote

0

answers

39

views

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

differential-geometry riemannian-geometry complex-geometry

may 9 at 8:49 Trimok 264

1

vote

0

answers

175

views

Complete vs General Integral of first order PDE

pde physics

aug 29 at 22:10 doraemonpaul 3,021

1

vote

0

answers

69

views

Collision of eigenvalues of a linear ODE (Krein collisions)

differential-equations classical-mechanics

jul 28 at 20:09 Shibi Vasudevan 301

3

1

vote

0

answers

127

views

Extra Dimensions in String Theory

reference-request physics

dec 9 '11 at 5:15 Community♦ 1

1

0

votes

4

answers

63

views

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

physics

dec 2 at 4:54 Neal 6,432

Qmechanic

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