User outlaw

12 votes

3 answers

9k views

The sigma function (sum of divisors) multiplicative proof

asked Sep 30, 2016 at 19:20

6 votes

3 answers

2k views

Integration of power series

asked Jun 6, 2017 at 18:39

4 votes

2 answers

504 views

Numerical evaluation of an infinite sum

asked Jun 25, 2017 at 11:40

3 votes

1 answer

582 views

Closed form of sum of infinite series of Legendre polynomials

asked Apr 25, 2017 at 16:49

2 votes

0 answers

259 views

Closed form of summation of Legendre polynomials

asked May 20, 2017 at 14:44

1 vote

2 answers

96 views

Show that a function is trivial on the unit circle

asked Oct 12, 2016 at 12:53

1 vote

1 answer

393 views

Spherical Harmonics basis for $L_2(S^2)$, what about the space of functions on the sphere of radius R

asked Aug 2, 2017 at 7:53

1 vote

1 answer

69 views

Analytical derivative of a signal $y(t)$ wrt to a signal $x(t)$

asked Sep 14, 2021 at 6:31

0 votes

2 answers

812 views

Integral involving Legendre polynomials

asked Oct 11, 2017 at 16:12

0 votes

0 answers

128 views

Reduce a function on the sphere of radius R to a function on the unit sphere

asked Jul 3, 2017 at 16:35

0 votes

1 answer

184 views

Show that $x^2+xy+2y^2$ is equivalent to $x^2-xy+2y^2$ and that $3x^2+xy+4y^2$ is not equivalent to $3x^2-xy+4y^2$

asked Dec 11, 2016 at 14:26

0 votes

1 answer

1k views

How to get the Green's function in 2D from the 3D Green

asked Feb 16, 2017 at 19:11

0 votes

1 answer

812 views

Convergence of Series involving Legendre Polynomials

asked Jun 11, 2017 at 8:15

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13 Questions

The sigma function (sum of divisors) multiplicative proof

Integration of power series

Numerical evaluation of an infinite sum

Closed form of sum of infinite series of Legendre polynomials

Closed form of summation of Legendre polynomials

Show that a function is trivial on the unit circle

Spherical Harmonics basis for $L_2(S^2)$, what about the space of functions on the sphere of radius R

Analytical derivative of a signal $y(t)$ wrt to a signal $x(t)$

Integral involving Legendre polynomials

Reduce a function on the sphere of radius R to a function on the unit sphere

Show that $x^2+xy+2y^2$ is equivalent to $x^2-xy+2y^2$ and that $3x^2+xy+4y^2$ is not equivalent to $3x^2-xy+4y^2$

How to get the Green's function in 2D from the 3D Green

Convergence of Series involving Legendre Polynomials