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 Apr 18 accepted Tests for my “LineGraph-from-AdjacencyMatrix” function Apr 18 comment Tests for my “LineGraph-from-AdjacencyMatrix” function Thanks would be nice if you could give an explicite example... Apr 14 comment Get rid of for loops to construct $L$ hey thanks for contributing, I think I can use some of your ideas... Apr 11 awarded Nice Question Apr 11 asked Tests for my “LineGraph-from-AdjacencyMatrix” function Apr 11 comment Get rid of for loops to construct $L$ +1 thanks, the need to compute $L$ turned out in this discussion, if you're interested... Apr 11 revised Divergence of the Derivative of the Prime Counting Function added infinity Apr 5 comment When the line graph of a line graph gives us the original graph? +1 for question and answer, I think I can use this result as check for my linear algebra implementation of the mapping $L(G)$... Apr 1 comment Use Gröbner bases to count the $3$-edge colorings of planar cubic graphs… Thanks, do you know an online Gröbner base solver? I don't have acces to Maple locally... Apr 1 comment Interpretations of a weighted adjacency matrix's eigenvectors and eigenvalues? But aren't you then just interested in eigenvalues of symmetric matrices? Apr 1 revised Use Gröbner bases to count the $3$-edge colorings of planar cubic graphs… added 3 characters in body Mar 31 answered Is there a transitive property for undirected graph paths? Mar 31 comment Is there a transitive property for undirected graph paths? Isn't that obvious? What makes you worry? Mar 31 revised Who found the expression $n^2 - n + 41$ for generating prime numbers? added 1 character in body Mar 31 comment Who found the expression $n^2 - n + 41$ for generating prime numbers? @LeGrandDODOM wiki, added... Mar 31 revised Who found the expression $n^2 - n + 41$ for generating prime numbers? added 129 characters in body Mar 31 answered Who found the expression $n^2 - n + 41$ for generating prime numbers? Mar 31 comment Is it possible to express a vector using cross product with another vector? @ja72 I haven't checked and tried to point that out with "(if possible!)". Thanks for checking... Mar 31 comment Is it possible to express a vector using cross product with another vector? @ja72 post another answer! Every cross product should be welcome... Mar 30 comment Is this proof of the twin prime conjecture? @Ed_4434 although it's not a publication, it's pretty public...