Why there is no d'Alembert solution in 2D?
133044
Intuitive explanation of the difference between waves in odd and even dimensions
133255
$\tan(z)=i$, no solution
20837
Which of the choices solution of the Cauchy problem?
46357
DSolve not finding solution I expected
95981
Gravity in 2d space and inverse linear law
26850
2D inhomogeneous biharmonic equation
20568
Does the following have a solution for f(x,y)?
78569
Besides the $3x + 1$ problem, for which similar problems are still unresolved regarding trayectory?
67891
Why are there no discrete zero sets of a polynomial in two complex variables?
89863
2D Heat equation: inconsistent boundary and initial conditions
23495
Replacing solution NDSolve
154774
Why is electric field zero where equipotential surfaces intersect?
137015
Solutions for $a^2+b^2+c^2=d^2$
119763
Why separation of variables works in PDEs?
61242
L'Hôpital's rule does not apply?!
12876
Why can't electrostatic field lines form closed loops?
142642
$A=\begin{pmatrix}0&0&1\\ 0&1&0\\ 1&0&0\end{pmatrix}$, $X^2=A$ has no solutions