User Talmsmen

8 votes

2 answers

328 views

Quasiconformal maps in arbitrary dimensions

asked Apr 23, 2021 at 3:35

6 votes

4 answers

629 views

Generalizing contour integration to quaternions and bicomplex numbers

asked Mar 3, 2021 at 7:35

5 votes

1 answer

359 views

Recovering the nonlinear Schrödinger equation from its Lax pair

asked May 12, 2021 at 2:37

3 votes

1 answer

144 views

On the equation $[U, V] - V_x = C(x)$

asked May 16, 2021 at 5:08

3 votes

1 answer

181 views

A system of $2N$ equations resembling a Vandermonde matrix

asked May 15, 2022 at 5:05

3 votes

1 answer

318 views

Find $f:\mathbb R^3 \to \mathbb R$ s.t. $(f - 1)\Delta f + f^2 = 0$?

asked Dec 30, 2022 at 0:47

2 votes

1 answer

118 views

Is the Fourier multiplier $\mathcal F(G(-\hbar^2 \Delta)\psi)(p) = G(|p|^2)\hat \psi(p)$ justified for any real function $G$?

asked Dec 31, 2022 at 21:01

2 votes

1 answer

602 views

Solving $\psi_{xxx} + (u(x) - (ik)^3))\psi = 0$ for $x > 0$, $k \in \mathbb C$, and $u(x)$ smooth

asked Mar 31 at 20:31

2 votes

1 answer

244 views

Bicomplex Conjugate Derivative

asked Apr 8, 2021 at 20:28

2 votes

1 answer

111 views

Quasiconformal map from a subset of $\mathbb{C}$ to a polytope

asked Apr 10, 2021 at 21:58

1 vote

2 answers

2k views

Fourier transform of a holomorphic function

asked May 21, 2021 at 22:32

1 vote

0 answers

127 views

Removing intermediate terms from a $10^{\text{th}}$-degree polynomial

asked Aug 12, 2022 at 3:50

1 vote

0 answers

140 views

What are the limitations for calculating the inverse of a polynomial with the Lagrange inversion theorem?

asked Aug 14, 2022 at 5:16

1 vote

0 answers

38 views

Fourier Multipliers with Reciprocals $\hat{\psi}(p, t) = \hat{\psi}_0 (p) \exp(-it(a + |p|^{2})^{-1})$

asked Aug 31, 2022 at 22:02

1 vote

0 answers

187 views

Does there exist an isometry between a regular polygon and a circle?

asked Apr 17, 2021 at 18:30

0 votes

1 answer

181 views

Factor $\sum_{n=1}^{N} x^n$ [closed]

asked Jun 5, 2022 at 17:05

0 votes

0 answers

40 views

Multivariable Variation of Parameters $\psi_1(x, k)\int^{(x,t)}e^{ik^3(t-\tau)}[M_1(\xi,k)q(\xi,\tau)d\xi-X_1(\xi,\tau,k)d\tau]+\dots$

asked Aug 4 at 21:54

0 votes

0 answers

37 views

Finding a particular solution to a Lax pair on $[0, \infty)$ to solve $q_t + q_{xxx} + u(x)q = 0$ using the Fokas Method

asked Aug 5 at 3:39

0 votes

0 answers

111 views

Distance Metric on a Polytope

asked Apr 16, 2021 at 3:14

0 votes

1 answer

578 views

Existence of an inverse to the Schwarz-Christoffel mapping [closed]

asked Apr 7, 2021 at 0:23

Stack Exchange Network

20 Questions

Quasiconformal maps in arbitrary dimensions

Generalizing contour integration to quaternions and bicomplex numbers

Recovering the nonlinear Schrödinger equation from its Lax pair

On the equation $[U, V] - V_x = C(x)$

A system of $2N$ equations resembling a Vandermonde matrix

Find $f:\mathbb R^3 \to \mathbb R$ s.t. $(f - 1)\Delta f + f^2 = 0$?

Is the Fourier multiplier $\mathcal F(G(-\hbar^2 \Delta)\psi)(p) = G(|p|^2)\hat \psi(p)$ justified for any real function $G$?

Solving $\psi_{xxx} + (u(x) - (ik)^3))\psi = 0$ for $x > 0$, $k \in \mathbb C$, and $u(x)$ smooth

Bicomplex Conjugate Derivative

Quasiconformal map from a subset of $\mathbb{C}$ to a polytope

Fourier transform of a holomorphic function

Removing intermediate terms from a $10^{\text{th}}$-degree polynomial

What are the limitations for calculating the inverse of a polynomial with the Lagrange inversion theorem?

Fourier Multipliers with Reciprocals $\hat{\psi}(p, t) = \hat{\psi}_0 (p) \exp(-it(a + |p|^{2})^{-1})$

Does there exist an isometry between a regular polygon and a circle?

Factor $\sum_{n=1}^{N} x^n$ [closed]

Multivariable Variation of Parameters $\psi_1(x, k)\int^{(x,t)}e^{ik^3(t-\tau)}[M_1(\xi,k)q(\xi,\tau)d\xi-X_1(\xi,\tau,k)d\tau]+\dots$

Finding a particular solution to a Lax pair on $[0, \infty)$ to solve $q_t + q_{xxx} + u(x)q = 0$ using the Fokas Method

Distance Metric on a Polytope

Existence of an inverse to the Schwarz-Christoffel mapping [closed]