User Michael Engelhardt

3 votes

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Integrals involving fractions of exponentials

answered Apr 2, 2021 at 18:06

3 votes

Mechanical systems with their configuration space being a Lie group

answered May 22, 2021 at 14:24

3 votes

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Eigenvalues of operator

answered Sep 9, 2021 at 20:39

2 votes

Minimal surface enclosing two congruent balls

answered Dec 11, 2021 at 6:19

2 votes

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Sum of the first m terms of the expansion $(x+y)^n$

answered Jan 19, 2022 at 18:20

2 votes

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Christoffel symbols as the expansion coefficients of covariant/contravariant derivatives

answered Sep 19, 2020 at 3:57

2 votes

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How do you make an accurate, integrable approximation of $a \operatorname{mod} \left(\frac xb,1 \right)$ with a scaling constant $N$?

answered Sep 20, 2020 at 21:17

2 votes

Do pseudodifferential operators represent all physically meaningful quantities in quantum mechanics?

answered Sep 22, 2020 at 20:04

2 votes

Saddle point approximation of terms in a sum

answered Nov 23, 2020 at 14:34

2 votes

Hypergeometric function with changed argument

answered Mar 25, 2021 at 2:14

2 votes

Is this closed-form summation a special case of known Lerch zeta function formulas?

answered Dec 18, 2020 at 19:38

2 votes

Maxwell equations as Euler-Lagrange equation without electromagnetic potential

answered Dec 27, 2020 at 16:00

2 votes

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Example of differential equation with periodic boundary conditions that has at least two simple eigenvalues

answered Sep 21, 2019 at 16:07

2 votes

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Example of evaluation of $\int_0^1\left(\sum_{k=0}^n (f(x))^k\right)^{\alpha}dx$, for some choice of $f(x)$ satisfying certain requirements

answered Sep 15, 2019 at 3:27

2 votes

Limit of an integral vs limit of the integrand

answered May 11, 2019 at 3:12

2 votes

What is the closed form of this function?

answered Feb 25, 2020 at 20:49

2 votes

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A recurrence formula for the Legendre function $P_\mu^\nu(x)$

answered May 10, 2020 at 3:03

2 votes

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What happens to the metric when we normalize the basis?

answered Nov 23, 2019 at 19:51

2 votes

Explicit form of S-matrix on the line

answered Nov 12, 2019 at 18:32

2 votes

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Self-adjointness of generator and semigroup of an SDE

answered Dec 4 at 5:41

2 votes

Formulating a 3D "twist" transformation for a unit circle into a lemniscate while preserving arc length

answered Dec 21, 2023 at 15:47

2 votes

Existence of solutions to a series of integral equations

answered Aug 19 at 3:12

2 votes

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Validity of formula $u(x)=\frac{1}{4\pi}\int_G \nabla_y \frac{1}{\lvert x-y \rvert} \times \omega(y) \, d^3y +A(x)$ for periodic boundary case

answered Jul 15, 2023 at 5:45

1 vote

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How to force my differential equations give a bounded solution?

answered Dec 9, 2023 at 3:35

1 vote

A question regarding Hermite polynomials and exponential operators $\exp[e^{x^2/2}p(\frac{d}{dx})e^{-x^2/2}]f(x)$

answered Aug 16, 2023 at 6:29

1 vote

Placing pins on a Galton board to approximate an arbitrary distribution

answered Apr 6, 2022 at 3:27

1 vote

Evaluation of Gaussian multivariable integral

answered Jun 8, 2022 at 14:34

1 vote

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Conditions for surface area of surface of revolution to be product of arclengths

answered Dec 13, 2022 at 5:58

1 vote

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Differential form of the multidimensional "orthogonal dilation" operator

answered Mar 4, 2023 at 14:35

1 vote

Analytical approaches to approximate probability density functions of multivariate random functions

answered Oct 14 at 2:53

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111 Answers

Integrals involving fractions of exponentials

Mechanical systems with their configuration space being a Lie group

Eigenvalues of operator

Minimal surface enclosing two congruent balls

Sum of the first m terms of the expansion $(x+y)^n$

Christoffel symbols as the expansion coefficients of covariant/contravariant derivatives

How do you make an accurate, integrable approximation of $a \operatorname{mod} \left(\frac xb,1 \right)$ with a scaling constant $N$?

Do pseudodifferential operators represent all physically meaningful quantities in quantum mechanics?

Saddle point approximation of terms in a sum

Hypergeometric function with changed argument

Is this closed-form summation a special case of known Lerch zeta function formulas?

Maxwell equations as Euler-Lagrange equation without electromagnetic potential

Example of differential equation with periodic boundary conditions that has at least two simple eigenvalues

Example of evaluation of $\int_0^1\left(\sum_{k=0}^n (f(x))^k\right)^{\alpha}dx$, for some choice of $f(x)$ satisfying certain requirements

Limit of an integral vs limit of the integrand

What is the closed form of this function?

A recurrence formula for the Legendre function $P_\mu^\nu(x)$

What happens to the metric when we normalize the basis?

Explicit form of S-matrix on the line

Self-adjointness of generator and semigroup of an SDE

Formulating a 3D "twist" transformation for a unit circle into a lemniscate while preserving arc length

Existence of solutions to a series of integral equations

Validity of formula $u(x)=\frac{1}{4\pi}\int_G \nabla_y \frac{1}{\lvert x-y \rvert} \times \omega(y) \, d^3y +A(x)$ for periodic boundary case

How to force my differential equations give a bounded solution?

A question regarding Hermite polynomials and exponential operators $\exp[e^{x^2/2}p(\frac{d}{dx})e^{-x^2/2}]f(x)$

Placing pins on a Galton board to approximate an arbitrary distribution

Evaluation of Gaussian multivariable integral

Conditions for surface area of surface of revolution to be product of arclengths

Differential form of the multidimensional "orthogonal dilation" operator

Analytical approaches to approximate probability density functions of multivariate random functions