List questions from mathematical-physics

Published on 17 Apr 2026 - 3:44

122

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How to obtain transcendental equation from matrix with determinant?

Published on 08 Apr 2026 - 17:58

138

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I just had this thought. Can we find an identity that separates the product x.y in trig functions, i.e Cos(x.y)=f(x).g(y) or Sin(x.y) = f(x).g(y)

Published on 14 Apr 2026 - 21:22

166

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What does it expression tells us when we write Shannon entropy in terms of continues distribution?

Published on 26 Mar 2026 - 17:46

89

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Velocity in an aging jelly

Published on 11 Apr 2026 - 0:56

65

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What is the order of operations for an operator acting on a function of a transformed vector?

Published on 10 Apr 2026 - 22:35

411

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Degrees of freedom in translational motion

Published on 11 Apr 2026 - 8:03

233

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6-dimensional integral with strange result

Published on 13 Apr 2026 - 14:01

200

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Fourier transform and wave packet

Published on 11 Apr 2026 - 10:59

72

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Does every Hamiltonian equation can be written in a some system of coordinates as a canonical Hamiltonian system

Published on 25 Mar 2026 - 14:25

163

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What do the following symbols mean in this paper?

Published on 27 Mar 2026 - 0:06

78

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Solve differential equation $\ddot{x} = -a \frac{x}{|x|^3}$

Published on 25 Mar 2026 - 12:54

135

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If a functional takes a function as an argument, isn't that function also always a linear functional?

Published on 12 Apr 2026 - 21:39

119

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Help understanding exponential in Feynman-Kac proof

Published on 12 Apr 2026 - 21:38

286

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Two notions of a pure state

Published on 13 Apr 2026 - 9:40

List Question

Does local flatness imply a local Euclidean metric?

How to obtain transcendental equation from matrix with determinant?

I just had this thought. Can we find an identity that separates the product x.y in trig functions, i.e Cos(x.y)=f(x).g(y) or Sin(x.y) = f(x).g(y)

What does it expression tells us when we write Shannon entropy in terms of continues distribution?

Velocity in an aging jelly

What is the order of operations for an operator acting on a function of a transformed vector?

Degrees of freedom in translational motion

6-dimensional integral with strange result

Fourier transform and wave packet

Does every Hamiltonian equation can be written in a some system of coordinates as a canonical Hamiltonian system

What do the following symbols mean in this paper?

Solve differential equation $\ddot{x} = -a \frac{x}{|x|^3}$

If a functional takes a function as an argument, isn't that function also always a linear functional?

Help understanding exponential in Feynman-Kac proof

Two notions of a pure state

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