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Jun
28
awarded  Nice Question
Jun
27
awarded  Popular Question
Jun
27
answered What do I not understand about one-to-one functions?
Jun
27
asked Ways to study mathematics while commuting
Jun
26
revised If $4k^3+6k^2+3k+l+1$ and $4l^3+6l^2+3l+k+1$ are powers of two, how to conclude $k=1, l=2$
added 189 characters in body
Jun
25
revised If $4k^3+6k^2+3k+l+1$ and $4l^3+6l^2+3l+k+1$ are powers of two, how to conclude $k=1, l=2$
edited title
Jun
25
asked If $4k^3+6k^2+3k+l+1$ and $4l^3+6l^2+3l+k+1$ are powers of two, how to conclude $k=1, l=2$
Jun
23
awarded  Nice Question
Jun
23
comment When is $(a^2+b)(b^2+a)$ a power of $2$?
I thought of this question myself, just experimenting :)
Jun
23
comment When is $(a^2+b)(b^2+a)$ a power of $2$?
that was fast. thanks!
Jun
23
accepted When is $(a^2+b)(b^2+a)$ a power of $2$?
Jun
23
asked When is $(a^2+b)(b^2+a)$ a power of $2$?
Jun
1
awarded  Popular Question
May
23
awarded  Yearling
Jan
26
accepted Maximum number of different diagonals obtained by column permutations
Jan
25
revised Maximum number of different diagonals obtained by column permutations
added 64 characters in body
Jan
25
comment Maximum number of different diagonals obtained by column permutations
Thanks Zackkenyon, my question is the latter: "What is the maximum number of diagonals among all such matrices?"
Jan
25
asked Maximum number of different diagonals obtained by column permutations
Dec
24
awarded  Notable Question
Nov
30
awarded  Favorite Question