dREaM
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 Jan 6 revised Sum and product of k real numbers > 0 is unique? added 1 character in body Jan 6 answered Sum and product of k real numbers > 0 is unique? Jan 6 answered Variant of “prisoners and hats” puzzle with more than two colors Jan 5 comment A combinatoric $gcd$ problem If you want to solve that project euler problem you would be better of reading the wikipedia pythagorean triples page carefully Jan 5 comment Complete group multiplication table with 6 elements. yes${}{}{}{}{}{}$ Jan 5 comment Complete group multiplication table with 6 elements. The two groups are $S_3$ and $\mathbb Z_6$ Jan 5 comment $K_3$ subgraph in a random graph It is a lot easier to find the expected number of triangles. Jan 5 answered What method can I use to determine continuity of squares on a 2d grid? Jan 5 comment What method can I use to determine continuity of squares on a 2d grid? use a union-find. Jan 5 comment What method can I use to determine continuity of squares on a 2d grid? connected is a better word Jan 5 comment Prove that there exists bipartite graph with this degree sequence: $(3,3,3,3,3,5,6,6,6,6,6,6,6,6)$ Nice, I think the following argument as to why $34$ cant be made is easier. The side without $5$ adds up to a multiple of $3$, which $34$ is not. Jan 5 accepted Metric space with two similar points which are not in the same orbit. Jan 4 asked Metric space with two similar points which are not in the same orbit. Jan 4 comment Break the connection between two edges by removing the minimum amount of edges This is also related: en.wikipedia.org/wiki/… Jan 4 comment Break the connection between two edges by removing the minimum amount of edges I think this is what you want: stackoverflow.com/questions/15991701/… Jan 4 comment Break the connection between two edges by removing the minimum amount of edges anyways, your problem is most likely determining the conectivity of a graph Jan 4 comment Break the connection between two edges by removing the minimum amount of edges Can you please revise your question? I think that you are swapping "edge" and "cities" and it makes it confusing Jan 4 comment Set of the vertex sets to make connected graph into disjoint sets of vertices? Wait, do you want to have zero edges after removing the vertices? Or do you just want it to be disconnected? If it is the first option what you want is a dominating set Jan 4 comment Countable-infinity-to-one function do you have any examples which come close ? the function $x\cos(x)$ with $x\neq0$ and $f(0)=0$ get us at least one point with countable preimage and everything elsse with finite preimage. Using this we can extend it to have any finite subset with finite preimage and everything else with finite preimage. Do you have examples that come closer (for example, on which gives an infinite set with uncountably infinite preimages)? Jan 4 comment Evaluate $\lim_{n\to\infty} \left( \frac{n!}{n^n} \right)^{1/n}$ yeah, I gave a small sketch of proof above, I agree this is a more direct approach.