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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
May
27
reviewed Approve Find constant which there is no constant term in binomial
May
27
comment Squares in $\mathbb Z_p$
Is $\mathbb Z_p$ used for the $p$-adics?
May
27
revised A question on $k$-connected graphs
added 184 characters in body
May
27
answered A question on $k$-connected graphs
May
26
comment Greek School Exams-Calculus problem
so this is a high school problem?
May
26
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.
May
26
answered Prove that if $\delta(V)\geq 2$, the graph $G=(V,E)$ has a cycle of length $\delta(V)+1$.
May
26
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.