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 May19 comment How can there be multiple irreducible representations of a group each having distinct dimension? @Jack since the markup is a subset of latex, the command syntax- $\color{color-you-want}{text}$ will introduce color in the math expression (i.e. within dollar signs), if you want colored text - place the text within a math-mode \text{text-goes-here} command May14 awarded Nice Question May9 comment Divisibility of 9 and $(n-1)^3 + n^3 + (n+1)^3$ @Theo funny that I had seen weierstrass p-functions without the script p. Is the W-p relevant in this situation (with the polynomial presented by Isaac) or is it just a stylistic variation on his part? May8 comment Divisibility of 9 and $(n-1)^3 + n^3 + (n+1)^3$ Never seen a script p like that used as a symbol. Where does it come from? May8 comment Is there any mathematical operation on Integers that yields the same result as doing bitwise “AND”? @Felipe what you have just described is a perfectly valid definition for the function you are looking for... Apr11 comment Given a null surface, calculate the manifold it resides in @joriki this is correct. I'll edit my question to be more clear. Apr11 awarded Organizer Apr11 comment What does the math notation $\sum$ mean? Symbolic computation, while sharing the same first word as your question does not quite relate, retagged to notation. Apr11 revised What does the math notation $\sum$ mean? edited tags Apr11 asked Given a null surface, calculate the manifold it resides in Dec12 comment Computer Programs for Pure Mathematicians @Raphael @J.M. of course there are open source alternatives to almost every commercial package. I will edit my question in the morning to add in free alternatives Dec12 answered Computer Programs for Pure Mathematicians Dec11 comment Why does dust gather in corners? Maybe there is an effect similiar to Lagrangian points for gravitational fields? Dec11 accepted Elliptic Curves and Points at Infinity Dec10 comment Elliptic Curves and Points at Infinity @Adrián this book is at the perfect level. Thank you for the link. Dec10 comment Elliptic Curves and Points at Infinity @xdfm Yes, they are. You can imagine my surprise when I missed thanksgiving week and we jumped infinite fractions to discussing elliptic curves. Dec10 comment Elliptic Curves and Points at Infinity If I'm understanding you correctly, the "infinity" comes when we try to map this point back into k^n, over which the polynomial is defined? In other words, if we homogenize a polynomial (and Z is the added dimension), then all points in the vanishing locus with Z = 0 are points at infinity? In the end, isn't our goal to analyse the polynomial itself (and not the homogenized version)? So it makes sense to "normalize" with respect to Z. Dec10 asked Elliptic Curves and Points at Infinity Dec8 comment how to read a mathematical paper? Introduction, Conclusion, pictures/equations, and then the text if it actually is what I need. Dec3 comment what is product of delta function with itself? On a related note, does anyone know what the convolution of two delta functions is? Mathematica is telling me that $\delta(x-x_1)$ convolved with $\delta(x-x_2)$ is $\delta(x- x_1 - x_2)$, somehow doesn't seem believable.