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 Dec 3 awarded Nice Question Aug 4 awarded Yearling Mar 11 comment Is The Clique Algorithm by Ashay Dharwadker correct? Here is a counterexample for his other P=NP attempt (Hamiltonian cycle one: dharwadker.org/hamilton ): pastebin.com/jqZ6d3dm (use as graph.txt for his app). Hamiltonian cycle exists for this graph (it is $1,2,3,\dots,13,1$) but his algorithm finds only a path with 12 out of 13 vertices. Mar 4 comment How prove this matrix inequality $\det\left(6(A^3+B^3+C^3)+I_{n}\right)\ge 5^n\det(A^2+B^2+C^2)$? $A^{2n+1}=-A$ rarely holds for $A\geq 0$. In fact it holds only for $A=0$, so given the requirement $A+B+C=1$ it can't hold for all 3 matrices. So your example doesn't cover any valid case. Mar 1 revised Difference between $P(V,q)$ and $\tilde P(V,q)$ (about Lawson, Michelson “Spin Geometry”, page 19) Formatting/clarification Feb 28 revised Is there a subset $A\subseteq \mathbb{R}$, not having the BP (Baire property)? Corrected spelling Feb 28 revised Difference between $P(V,q)$ and $\tilde P(V,q)$ (about Lawson, Michelson “Spin Geometry”, page 19) clarifying the main question Feb 28 suggested approved edit on Is there a subset $A\subseteq \mathbb{R}$, not having the BP (Baire property)? Feb 27 revised Difference between $P(V,q)$ and $\tilde P(V,q)$ (about Lawson, Michelson “Spin Geometry”, page 19) added 2 characters in body Feb 27 asked Difference between $P(V,q)$ and $\tilde P(V,q)$ (about Lawson, Michelson “Spin Geometry”, page 19) Jan 17 answered Vector space of bidirectional sequences indexed by $\mathbb{Z}$ Jan 17 answered Proof for the curl of a curl of a vector field Jan 17 comment Proving the existence of disjoint subsets Count amount of choices for $I$ and amount of options for $\bigcup_{i\in I} A_i$. Dec 21 awarded Caucus Oct 8 awarded Good Answer Aug 4 awarded Yearling Jul 2 awarded Curious Mar 8 answered Number of groups of a given order Mar 6 answered Extended matrix function Feb 19 revised Matrix diagonalization theorems and counterexamples: reference-request. Correcting English grammar in question #4