Grigory M
Reputation
11,525
365/400 score
 Jan 5 revised Inequality involving binomial coefficients edited tags Jan 5 revised Does the classifying map of a fibre bundle only depend on the transition functions? edited tags Jan 5 revised Is $\mathbb{H}P^\infty$ an H-space or not? edited tags Jan 3 revised Show that $\mathbb{R} P^3$ is not homotopy equivalent to $\mathbb{R} P^2 \vee S^3$. edited tags Jan 2 revised Generating functions to solve number of integer solution problem edited tags; edited tags Jan 2 revised How to prove the equivalence of the two functions? edited tags Jan 2 revised Prove that $2\sqrt{n}\sqrt{n+1} < 2n + 1$ for all positive integers. edited tags Jan 2 revised If a is not relatively prime to n prove modulo property edited tags Jan 2 revised Solve in integers: $x^2 = y^2 + y + 1$ edited tags Jan 2 revised Prove that $x^2 + y^2 = 3(z^2 + m^2)$ has no solutions in integer edited tags Jan 2 revised Is this version of Lagrange's four-square theorem true? edited tags Jan 2 revised Solve $x^4 - 2x^3 + x = y^4 + 3y^2 + y \wedge (x,y) \in \mathbb{Z}^2$ edited tags Jan 2 revised Calculate $\log_{a}(ab)$, when $\log_{ab}(b)$ is known edited tags Jan 2 revised Determine the number of integral solutions of the equation edited tags Jan 2 revised Why Is $y^{-1}$ = $\frac{1}{y^1}$? edited tags Jan 2 revised Can the difference of two Harmonic numbers be an integer? edited tags Jan 2 revised step function which is function of the variables edited tags Jan 2 revised Prove that the function is continuous at n where n is an integer, but discontinuous elsewhere. edited tags Jan 2 revised Solution to the heat equation with mixed boundary conditions and step function. edited tags Jan 2 revised Using dirac delta functions to get $h(t)$ that satisfies $[u(t+1/2)-u(t-1/2)] \ast h(t) = [u(t+6)-u(t+2)]$ where $u(t)$ is unit-step function edited tags