i. m. soloveichik
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 Jan17 reviewed Approve How to generate $2\times 2$ matrix with integer entries and both eigenvalues inside unit disk Jan8 comment Kernel and image of a homomorphism $SL(2,5)\to S_5$ $S_5$ has a trivial center. Dec16 awarded Caucus Oct15 reviewed Reject Show that $\gcd(3n,3n+ 2) = 1$ when $n$ is odd Oct3 reviewed Approve Solving seperable ODE $\frac{dy}{dx} = \sin x\cdot\sinh^2 y$ Sep24 reviewed Approve First order nonlinear ODE Aug27 reviewed Approve Formula(/How) to find 2 numbers that add together to give one number and times to give another Aug27 reviewed Approve sketch the region in the xy-plane Aug27 reviewed Approve How to find where $3$ lines intersect. Aug27 reviewed Approve Finding a unique solution given rank $A = m$ Aug19 accepted Determine the center of this finitely presented group. Aug12 reviewed Approve Triple Integral Volume Question Aug9 answered Surprising identities / equations Aug8 comment Proving that the intersection of a Sylow p-group with a normal subgroup is also a Sylow p-group Aug8 reviewed Close Boolean function construction Aug8 reviewed Approve In a $16\times16$ chessboard, what is the probability that a rectangle chosen at random on the chess board is a square? Aug8 reviewed Approve How to evaluate the integral $\int e^{2x} \sin^2x\ dx$ Aug7 comment How prove $-\sqrt{2}\log(\cos x)\leq\sqrt{x\tan x-\sin^{2}x}$? Use the derivative Aug7 reviewed Approve If G is direct product of nonabelian & simple groups. Then prove that Aut(Aut(G)) has only inner automorphisms. Aug7 answered How can I prove that $xy\leq x^2+y^2$?