DSolve gives solution that is not a solution
How to make RegionPlot3D draw facets accurately
Creation & Annihilation Operators with Non-Commutative Algebra Mathematica 14.3
Integration of multidimensional `DiracDelta[x]DiracDelta[y]` gives wrong result!
Why does this trigonometric sum show unexpected poles in Plot?
Points between which the region distance was measured
Special Flatten in ragged arrays
DSolve gives solution that is not a solution https://mathematica.stackexchange.com/landing/r/digest?cta=question&id=318898
I have the following code DSolve[-(3/2) D[P[t, x], x] D[P[t, x], t] == D[P[t, x], t, x], P, {t,x}] which gives as a solution ... [differential-equations] [bugs]
asked by mattiav27 https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=8822
Score of 9 answered by Nasser https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=70
Score of 5 How to make RegionPlot3D draw facets accurately https://mathematica.stackexchange.com/landing/r/digest?cta=question&id=318842
I've been thinking about hexastix and I thought I would try to make some images in Mathematica, similar to this one which I took from Wikipedia: So, my first goal is to make a single infinite ... [graphics3d] [regions] [computational-geometry] [regionplot]
asked by David E Speyer https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=1200
Score of 8 answered by azerbajdzan https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=53172
Score of 9 Creation & Annihilation Operators with Non-Commutative Algebra Mathematica 14.3
https://mathematica.stackexchange.com/landing/r/digest?cta=question&id=318857
I want to work with (mostly expand/simplify) expressions involving some creation & annihilation operators. Mathematica 14.3 now has the NonCommutativeAlgebra[] function which seems like it could ... [algebraic-manipulation] [ncalgebra] [version-14.3] [non-commutative-algebra]
asked by Mstislav Keldysh https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=93185
Score of 7 answered by march https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=29734
Score of 10 Integration of multidimensional `DiracDelta[x]DiracDelta[y]` gives wrong result!
https://mathematica.stackexchange.com/landing/r/digest?cta=question&id=318880
The integration of DiracDelta[] in two dimensions gives the expected result ... [distributions]
asked by Ulrich Neumann https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=53677
Score of 5 answered by azerbajdzan https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=53172
Score of 3 Why does this trigonometric sum show unexpected poles in Plot? https://mathematica.stackexchange.com/landing/r/digest?cta=question&id=318894
Given the following sum Sum[Sin[x^2*(2*t - 1)*y]^2/Sin[2*x^2*y*t]^2, {t, 1, L - 1}] where $x\le L-2$ and $x$, $y$, and $t$ are all positive (non-zero) integers. ... [functions] [summation] [trigonometry] [singularity]
asked by Rob https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=66809
Score of 4 answered by Bob Hanlon https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=9362
Score of 3 Points between which the region distance was measured https://mathematica.stackexchange.com/landing/r/digest?cta=question&id=318896
RegionDistance is quite effective. But can we extract positions of points between which this distance was measured (without using other methods to recompute them)? ... [regions] [geometry] [distance]
asked by azerbajdzan https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=53172
Score of 4 answered by user64494 https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=7152
Score of 3 Special Flatten in ragged arrays https://mathematica.stackexchange.com/landing/r/digest?cta=question&id=318863
I'm working on a project in the spirit of Wolframs Ruliad concept. A nested ragged arrays appear in the process e.g. {0}, {0,{1}}, {{1}, {{0}, 1}}} etc. And ... [list-manipulation] [replacement] [pattern-matching]
asked by lesobrod https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=5950
Score of 4 answered by lericr https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=84894
Score of 4