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Apr
16
reviewed Close Solving equations with hyperbolics $\sinh^2(x)+\cosh(x)=11$
Apr
16
reviewed Leave Open Proof that any unit-speed-reparametrization of a curve preserves orientation and is an inverse of an arc length function based at some $t_0$.
Apr
16
reviewed Close Defining a stochastic process indexed by angle
Apr
16
reviewed Leave Open Product of two infinite sequences
Apr
16
reviewed Close How to solve $1 = \sum_{p \text{ prime}} x^{-p-1}$?
Apr
16
reviewed Leave Open Find the marginal densities of X and Y?
Apr
16
comment Find the marginal densities of X and Y?
To prove ^, you can integrate wrt y, this this needs some tricks
Apr
16
reviewed Leave Open Estimating a sum
Apr
16
reviewed Leave Open Prove $(n,m)R(r,s) \equiv (n>r) \text{ or } (n=r \text{ and } m\geq s)$ is an order relation.
Apr
16
reviewed Leave Open What is the slow manifolds? and how to calculate?
Apr
16
reviewed Close What is the derivative of max and min functions?
Apr
16
reviewed Close Difference : subsequences and substrings
Apr
16
awarded  Revival
Apr
15
awarded  Necromancer
Apr
9
comment Left eigenvector of stochastic matrices with eigenvalue 1
nice, are you at havard?
Apr
9
accepted Left eigenvector of stochastic matrices with eigenvalue 1
Apr
9
comment Left eigenvector of stochastic matrices with eigenvalue 1
I assume that eigenvalue smaller than 1 follows by the fact it is stochastic. Assume it is not, then you can contradict the fact it is not stochastic?.
Apr
8
comment Left eigenvector of stochastic matrices with eigenvalue 1
@thanasissdr i have an irreducible markov chain in mind, hence the comment about the uniqueness of equilibrium distribution.
Apr
1
asked Left eigenvector of stochastic matrices with eigenvalue 1
Mar
1
asked Ito's formula w