Gamamal
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 1h comment Impossible Math Riddle Does mathematician $B$ know the number of apples in mathematician $A$'s apple tree? 2h accepted Integers of the form $x^2+2y^2$. 2h comment Integers of the form $x^2+2y^2$. Thank you very much Achille hu, that works. I allready find it in another pdf a while ago, but I really appreciate it. 12h comment Integers of the form $x^2+2y^2$. don't think this works because the determinant of the lattice is p^2 so I have to show the area of the elipse is at least 4p^2 which is clearly false 20h accepted Topology problem I invented (characterizing spaces in which every open set is closed) 22h comment Integers of the form $x^2+2y^2$. Thanks, I have no idea how I should use Minkowski's theorem 22h comment Integers of the form $x^2+2y^2$. I think I still have to show it works for squares of primes that are $2,3$ or $5\bmod 8$ 22h revised Integers of the form $x^2+2y^2$. edited body 22h asked Integers of the form $x^2+2y^2$. 2d comment Proof that $a\mid x, b\mid x, \gcd(a,b)=1 \implies (ab)\mid x$ This is the correct solution (In the sense you can use it later when you're in more general structures) 2d answered Proof that there exists an $x \in G$ such that $xa = b$ 2d revised Are Zero Degree polynomials Considered monics? edited title May27 reviewed Approve Find constant which there is no constant term in binomial May27 comment Squares in $\mathbb Z_p$ Is $\mathbb Z_p$ used for the $p$-adics? May27 revised A question on $k$-connected graphs added 184 characters in body May27 answered A question on $k$-connected graphs May26 comment Greek School Exams-Calculus problem so this is a high school problem? May26 comment How to avoid rote learning and perform deep learning? You just need more practice that's all. I think solving problems in Brilliant is a good way to internalize some concepts. May26 answered Prove that if $\delta(V)\geq 2$, the graph $G=(V,E)$ has a cycle of length $\delta(V)+1$. May26 comment Prove that if $\delta(V)\geq 2$, the graph $G=(V,E)$ has a cycle of length $\delta(V)+1$. Yes it is, otherwise consider a pentagon. The miminal degree is two but it has no triangles.