Eugene
Reputation
4,105
Top tag
Next privilege 5,000 Rep.
Approve tag wiki edits
 May13 awarded Caucus Apr16 accepted Is there a problem with this example? Mar29 asked Is there a problem with this example? Mar4 awarded Revival Feb12 awarded Nice Question Feb4 comment Let $A,B$ be two subgroups of $G$. Show that $g(A\cap B)=gA \cap gB$ for all $g \in G$ This would be easier to think about if you took $c \in A \cap B$. So this would rephrase your first step to $gc \in g(A \cap B)$. The result basically follows from here. Dec14 awarded Revival Sep21 awarded Custodian Sep15 awarded Nice Question Aug13 awarded Necromancer Aug4 awarded Revival Jul28 answered If $p$ is a factor of $m^2$ then $p$ is a factor of $m$ Jul17 comment How to solve this Pell's equation $x^{2} - 991y^{2} = 1$ Read this. Jul12 awarded Revival Jul6 revised Solve the simultaneous congruences: $2n + 6m\equiv 2 \pmod{10}$ and $n + m\equiv -2 \pmod{10}$ edited body; added 1 characters in body Jul6 answered Solve the simultaneous congruences: $2n + 6m\equiv 2 \pmod{10}$ and $n + m\equiv -2 \pmod{10}$ Jul3 comment Riemann Zeta formula Jul3 revised infinite number of irreducible polynomials in $\mathbb{Z}/2{\mathbb Z}[X]$ edited title Jul2 comment Your favourite application of the Baire Category Theorem Jul2 awarded Civic Duty