Peter Taylor
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 Nov 13 reviewed Close Prove Perfect square of the form 4k or 4k+1 Nov 12 reviewed Looks OK Is there a way to find sum of numbers to a certain power? Nov 12 reviewed Looks OK Calc 2 Limit Comparison Test Nov 9 comment Squares with squares Not only does this not answer the question, but it's not even clear what question it's attempting to answer. You appear to have your own idea of what numbers "of that kind" are, but you haven't defined it, and it's certainly not clear to me why you disqualify e.g. $38^2 = 1444 = 12^2 \times 10 + 2^2$ Nov 9 comment Squares with squares Fair enough. Updated. Nov 9 revised Squares with squares added 144 characters in body Nov 9 answered Squares with squares Nov 8 revised Sign table in $2^k$ factorial experiment added 505 characters in body Nov 7 revised Sign table in $2^k$ factorial experiment added 520 characters in body Nov 7 comment Sign table in $2^k$ factorial experiment Ok, which specific part do you have trouble generalising to the four-factor case? Nov 7 answered Sign table in $2^k$ factorial experiment Oct 31 comment Extended Euclidean Algorithm to find multiplicative inverse of two polynomials If a polynomial has no remainder when divided by 1, it has no remainder when divided by 2, and vice versa. Oct 31 answered Extended Euclidean Algorithm to find multiplicative inverse of two polynomials Oct 30 comment How many subsets xor to given value? @user128409235, that's awfully specific. Is this for a programming contest or something similar? Oct 13 comment A nice form of a given function @Halbort, I think $\max \{a_i - (a_i \oplus k)\}$ is as simple as it's likely to get. Oct 1 comment A nice form of a given function Is that clearer? Oct 1 revised A nice form of a given function Expanding last point: MathJax preview is broken, so hope this renders ok Sep 30 answered A nice form of a given function Sep 30 revised Equating summations of an integer partition and its conjugate Fix MathJax Sep 30 answered Equating summations of an integer partition and its conjugate