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Jan
31
answered Is there an expression for the sum of $\binom nr^2$ for each $n$?
Jan
31
comment number of edges to build all hamiltonian paths in complete digraph
Does the complete digraph have a specific orientation? or does it have double edges?
Jan
31
comment Prove that there exist a sylow subgroup of $G$ which is fixed by $\alpha$.
I don't understand that part either.
Jan
31
comment Is it true/false that $ W=\{(0,0,a_3):a_3 \in R \} $ then $W=\mathbb{R}$?
They are different sets, but they have lots of similarities
Jan
31
revised Numbers written as $a^b+b$ for $a,b\geq 2$
added 12 characters in body
Jan
31
answered Proof that $ax+by+cz=0$ has infinitely many solutions.
Jan
31
revised Numbers written as $a^b+b$ for $a,b\geq 2$
deleted 22 characters in body
Jan
31
comment Numbers written as $a^b+b$ for $a,b\geq 2$
Oh yeah${}{}{}{}{}$.
Jan
31
revised Numbers written as $a^b+b$ for $a,b\geq 2$
added 2 characters in body
Jan
31
comment Numbers written as $a^b+b$ for $a,b\geq 2$
Oh yeah, thank you very much, my bad. Fixed.
Jan
31
revised Numbers written as $a^b+b$ for $a,b\geq 2$
added 369 characters in body
Jan
31
answered Numbers written as $a^b+b$ for $a,b\geq 2$
Jan
31
comment Combinatoric problem - roundtable
How is A being opposite to $C$ the same as $A$ being opposite to $D$?
Jan
31
answered Combinatoric problem - roundtable
Jan
31
comment Combinatoric problem - roundtable
Oh ok, this is a simple application of burnside's enumeration theorem.
Jan
31
comment Sequence $\left\{ x_{n}\right\} _{n\geq1}$ s.t $\left|x_{n+1}-x_{n}\right|<2^{-n}$ for all $n\geq N$ , does this imply convergence?
Oh yes, my bad. thanks.
Jan
31
revised Sequence $\left\{ x_{n}\right\} _{n\geq1}$ s.t $\left|x_{n+1}-x_{n}\right|<2^{-n}$ for all $n\geq N$ , does this imply convergence?
added 10 characters in body
Jan
31
comment Combinatoric problem - roundtable
is it $24!{}{}{}{}{}$ ?
Jan
31
answered Sequence $\left\{ x_{n}\right\} _{n\geq1}$ s.t $\left|x_{n+1}-x_{n}\right|<2^{-n}$ for all $n\geq N$ , does this imply convergence?
Jan
31
comment Double sequence, if $(x_m)_m$ and $(y_n)_n$ converge, then they have the same limit?
I don't think this is enough.