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Intereting Posts

Do we really need embedding for this?
Proving that the medians of a triangle are concurrent
Lagrange multiplier question: finding a counterexample.
Spectrum of the sum of two commuting matrices
Supposed proof of dirichlets theorem on primes
Projection of a 3D spherical distribution function in to a 2D cartesian plane
Transfinite derivatives
$M_3$ is a simple lattice
$f(x) – f'(x) = x^3 + 3x^2 + 3x +1; f(9) =?$
Show that the average depth of a leaf in a binary tree with n vertices is $ \Omega(\log n)$.
Find the sum of the series $\frac{1}{2}-\frac{1}{3}+\frac{1}{4}-\frac{1}{5}+\frac{1}{6}-\cdots$
The most common theorems taught in Abstract Algebra
Approximating measures by open sets and compact sets.
A planar Brownian motion has area zero
Rank of unit group of orders in number fields