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23h
answered Prove that for a quadratic form $Q(x) = x^TAx$, $A$ is symmetric.
1d
answered Finite series identity
1d
answered discrete finite summation of non-linear functions
1d
answered Probability that 2 people share the same Birth date, month, and day of the week.
2d
answered How to describe the transformation that changes French flag to Russian flag?
2d
asked Diophantine equation $(x+y)(x+y+1) - kxy = 0$
2d
answered Difficult Differential Equation ($2^{nd}$ order ODE)
Sep
1
answered Why does WolframAlpha's expression for $\int\frac{dx}{x\sqrt{x^4-4}}$ disagree with my own?
Sep
1
answered Families of subsets whose union is the whole set
Sep
1
answered Proving uniform convergence on disk within radius of convergence
Aug
31
answered If $A,B \in \mathcal{M}_n$ and $AB=BA=\mathbb{O}_n$ prove that $(A+B)^ν = Α^ν + Β^ν$.
Aug
31
answered A question on numerical range
Aug
31
answered Minimal Polynomial Properties
Aug
31
answered Can distributions be thought of as functions of a real variable?
Aug
31
answered Manifolds with a finite but not trivial fundamental group
Aug
31
answered Euclidean geometry and $L_2(\lambda)$ space
Aug
31
answered 1, 5, 9, 13, 17, 21,…
Aug
31
answered Randomly picking 2 integers to compute a third one with equiprobability
Aug
30
answered Is there a continuous function from $[0,1]$ to $\mathbb R$ that satisfies
Aug
30
answered cos(4v) + cos(v) = 0