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Sep
16
revised Kaprekar's constant-related problem
Add graph
Sep
16
revised Kaprekar's constant-related problem
edited body
Sep
15
revised Find all $n\in\mathbb{Z}^+$ satisfying : $n\mid(2^{\varphi(n)}+3^{\varphi(n)}+\cdots +n^{\varphi(n)}).$
Fix a misplaced }
Sep
13
revised Prove that every practical number is either a power of two or a power of two times a non-trivial polygonal number
Don't need the Stewart/Sierpinski characterisation for these cases - that was a hangover from previous thinking
Sep
11
revised How find this vmatrix of this $a_{n}=\frac{(2n-1)!!}{(2n)!!}$
Close the loop on the generating functions
Sep
11
revised How find this vmatrix of this $a_{n}=\frac{(2n-1)!!}{(2n)!!}$
Eliminate a long derivation in favour of a reference which gives a more elegant form; complete the proof of my hypothesised closed form
Sep
11
revised How find this vmatrix of this $a_{n}=\frac{(2n-1)!!}{(2n)!!}$
Alternative closed forms; thoughts towards an inductive proof
Sep
11
revised How find this vmatrix of this $a_{n}=\frac{(2n-1)!!}{(2n)!!}$
added 70 characters in body
Sep
11
revised How find this vmatrix of this $a_{n}=\frac{(2n-1)!!}{(2n)!!}$
added 276 characters in body
Sep
10
revised In a complete lattice every monotone function has a fixpoint (Knaster–Tarski Theorem)
http://meta.math.stackexchange.com/questions/8485/how-civil-should-we-be
Aug
17
revised How to get count of digits of a number
edited tags
Aug
14
revised proofs for combinatorial identities?
Correct index of summation
Aug
9
revised Streaming algorithm for polynomial fitting data?
Inline the key part in case the link dies
Jul
24
revised X : Y :: P : Q to find Q. whats the name of this method?
edited tags
Jul
23
revised Is it possible to build a circle with quadratic Bézier curves?
added 370 characters in body
Jul
15
revised balls and bins - the probability of reaching the exact expected value
Correct use of parameters
Jul
10
revised Dual space and inner/scalar product space
formatting
Jul
4
revised Intersection of cubic bezier curve and circle
deleted 9 characters in body
Jul
1
revised Circle in a simplex
added 20 characters in body
Jun
17
revised Why does this theorem fail for arbitrarily large n?
Extended suggested edit to include the bottom half of the second image