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 1h revised How many vertices do you need so that all squares are not directly connected? deleted 1 character in body 4h revised What does this new connection between Chebyshev, Ramanujan, Ihara and Riemann mean? added 6 characters in body 9h revised If $X_n\to X$ and $Y_n\to Y$ then $X\overset{a.s}{=}Y$ added 9 characters in body; edited title 9h revised What does this new connection between Chebyshev, Ramanujan, Ihara and Riemann mean? deleted 1 character in body; edited title 2d revised Problem with an algorithm to $3$-colour the edges of cubic graphs added 26 characters in body 2d revised $n$th derivative of $\ln f(x)$ fit formula on one line Nov 23 revised Inverse of circulant matrices added 13 characters in body Nov 18 revised Properties of the 'forgotten' symmetric polynomials added 181 characters in body Nov 16 revised Which cubic graphs have an eigenvalue of $\sqrt{6}$? edited tags Nov 16 revised Properties of the 'forgotten' symmetric polynomials added 49 characters in body Nov 16 revised Converting recursive equations into matrices added 104 characters in body Nov 13 revised How to abbreviate $a_0=a_1=\cdots=a_n$? edited tags Nov 13 revised Co-prime binomial coefficient edited body Nov 11 revised What kind of graph/group theoretical structure is that? maybe tex helps to get an answer... Nov 11 revised Was this arithmetic Möbius/Mangoldt function ever used for something? added 85 characters in body Nov 11 revised An upper bound for $\log \operatorname{rad}(n!)$ added 2 characters in body Nov 9 revised Was this arithmetic Möbius/Mangoldt function ever used for something? added 65 characters in body Nov 8 revised When is ${(1-t^2)^{-N/2}}{\det(f_t(A))}$ expressible as polynomial? rolled back to a previous revision Nov 8 revised Consequences of cycle space cut space duality added 1 character in body Nov 6 revised When is ${(1-t^2)^{-N/2}}{\det(f_t(A))}$ expressible as polynomial? deleted 3 characters in body; edited title