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Jun
27
asked The mathematics behind Clebsch-Gordan Coefficients
Jun
24
comment Number of occurrences of the digit 1 in the numbers from 0 to n
While this is a correct way to approach this particular question, the actual problem in question (which is a project Euler problem) requires the sum total of all numbers that satisfy this condition for all digits 1-10. Not so easy (or fast) do with this brute force method (where do you set the upper search limit for instance?).
Jun
24
comment Number of occurrences of the digit 1 in the numbers from 0 to n
This is a not-so-veiled attempt to elicit a solution to a project euler problem.
Jun
22
asked Alternative group laws over the reals
Jun
4
comment Reason why these two probabilities are equal (Picking Balls in exact order without Replacement)
Intuitively there is a degeneracy between "sublevels" of the same ordering (i.e there are 12 different ways to pick AAABB but they are equivalent). Thus there is nothing special about one ordering versus another, therefore you would expect results that only differ in ordering to have the same probability.
May
31
comment Throwing All Numbers From 2 to 12 With Two Dice
What do you mean by "expected". In other words, at what probability threshold do you draw the line - the probability of all numbers appearing approaches, but never hits 1.
May
24
suggested rejected edit on Linear Algebra Question
May
19
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
May
14
awarded  Nice Question
May
9
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?
May
8
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?
May
8
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...
Apr
11
comment Given a null surface, calculate the manifold it resides in
@joriki this is correct. I'll edit my question to be more clear.
Apr
11
awarded  Organizer
Apr
11
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.
Apr
11
revised What does the math notation $\sum$ mean?
edited tags
Apr
11
asked Given a null surface, calculate the manifold it resides in
Dec
12
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
Dec
12
answered Computer Programs for Pure Mathematicians
Dec
11
comment Why does dust gather in corners?
Maybe there is an effect similiar to Lagrangian points for gravitational fields?