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Aug
22
answered How to find $\#\{1\le x\le 5^k:5^k|(x^4-1)\}$?
Aug
18
answered how can i find an optimal point on a scatter graph?
Aug
17
answered Existence of (nearly) number of digits preserving pairing function?
Aug
15
answered $32$ Goldbach Variations - Papers presenting a single gem in number theory or combinatorics from different point of view
Aug
15
answered $32$ Goldbach Variations - Papers presenting a single gem in number theory or combinatorics from different point of view
Aug
15
answered Something related to carmichael numbers.
Aug
13
answered Is $n$ square free if $\sigma(n)=2\varphi(n)$?
Aug
9
answered Minimum Cake Cutting for a Party
Aug
6
answered Cover $\{1,2,…,100\}$ with minimum number of geometric progressions?
Aug
2
answered Expression for negating every other odd number index
Jul
28
answered Intuitively and Mathematically Understanding the Order of Actions in Permutation GP vs in Dihereal GP
Jul
26
answered Condition for vector to have redundant coordinates
Jul
25
answered New Idea to prove $1+2x+3x^2+\cdots=(1-x)^{-2}$
Jul
24
answered Prove $K\cong S_3$
Jul
21
answered What is the most unusual proof you know that $\sqrt{2}$ is irrational?
Jul
19
answered Vertices of RSMT
Jul
19
answered Examples of the Mathematical Red Herring principle
Jul
19
answered Average $lcm(a,b)$, $ 1\le a \le b \le n$, and asymptotic behavior
Jul
17
answered Most natural intro to Complex Numbers
Jul
17
answered If you flip a quarter, what are the odds that you will land on that little piece on the edge?