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What is exactly happening here? Table[{(x^2 + y), (x^2 + y) /. x -> 2}, {x, 0, 3}] As the output I am getting: ...

How to calculate Kazhdan-Lusztig Polynomials using Mathematica? References: TABLES OF KAZHDAN-LUSZTIG POLYNOMIALS Kazhdan-Lusztig Polynomials - Combinatorics

I am trying to get 2D projections (onto the xy-, the xz- and the yz-planes) of a highly non-trivial 3D region delimited by 5 complicated inequalities on $(x,y,z)$. It is not possible to intersect the ...

I need random Hamiltonian cycles in directed graphs. I guess for me it would be OK to mean by that choosing uniformly randomly from the set of all Hamiltonian cycles. ...

I have the function J in two variables $m$ and $l$, which I obtained doing a series for $e$ and replacing $m \rightarrow e\cdot m$ and $l\rightarrow e\cdot l$, given by \begin{align} J(l,m):=& -2 \...

NOTE: you do not have to read all post. It is enough to read 1st code block below and the the question in bold to start answering. The rest of the post is explanation how this code works. It has been ...

Is it possible to have a particular edge in a graph represented by an arc instead of a straight line? The reason is that for my particular vertex positioning one of the vertices is colinear with a ...

I have two graphs, g1 and g2, defined as follows: ...

Is there a better way to replace a variable, not powers of it, than first to replace all unwanted terms by dummy terms and replacing them back later? Input: ...

What is the most efficient way to compute v.Reverse[v] or ListConvolve[v,v]? In particular, since most of the products occur ...

I want to create a simple code to solve an algebraic equation named eq[x], and plot x as a function of three parameters ...

The fabricated example below demonstrates a bizarre case I ran into. (If it matters, this is with Mma 14.1 on Apple ARM, but I see the same behavior with Mma 12.3.1 on Intel x86.) On a whim, I tried ...

Please tell me why the inner exclusion area has disappeared on the far right slide of the animation? Link to the full code: https://www.wolframcloud.com/obj/77844eb9-3678-4027-954c-9b4c3ae4ce7d The ...

How can tests be set up to run on GitHub actions for a Mathematica package? I am looking for a complete guide or perhaps a live example. This might be possible with the Free Wolfram Engine, but it is ...

Related problems have been asked and answered many times, but I don't see a solution for my problem. I have defined a function f which returns a vector of values ...