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elexhobby
  • Member for 11 years, 6 months
  • Last seen more than a month ago
9 votes

What is set of measure zero?

9 votes
Accepted

Semi-positive definite Hessian matrix and local minimum

4 votes
Accepted

Difference between a PDF and PMF

4 votes

Inequality between operator norm and Hilbert-Schmidt norm

4 votes
Accepted

X is some random variable and f is a continuous function. Is f[E(X)] = E[f(X)]?

4 votes
Accepted

A property about tail equivalent random variables

3 votes

Why does convergence in law not worry about points of discontinuity?

3 votes

If $A$ is real skew-symmetry. $I-A$ and $I+A$ are nonsingular

2 votes

Diagonalize the quadratic form $Q(x_1,\dots,x_n)=\sum_{i=1}^n a_ix_i^2+(\sum_{i=1}^n b_ix_i)^2$

2 votes
Accepted

Confused between different form of Bellman equations mentioned in different literatures

2 votes
Accepted

understanding solution to reward indicator problem

2 votes

What is the interpretation of the eigenvectors of the jacobian matrix?

1 vote
Accepted

Minimization of difference

1 vote

Show that if $a \sim b$, then $C(a) = C(b)$ where $C(x)$ is the equivalence class containing $x$.

1 vote

Roll a 6-sided fair die until a 6 appears. Let X = the number of 1's that are rolled. Find Var(X).

1 vote

Proving $\nabla_A tr(ABA^T C) = CAB + C^T A B^T$

1 vote
Accepted

Give a counterexample to show that $(AB)^{-1} \neq A^{-1}B^{-1}$

1 vote

If $P(X \geq a) = 1 - \frac{1}{4}a^2$, $0 \leq a \leq 2$, then what is the expectation of $X$?

1 vote

Ways of merging two incomparable sorted lists of elements keeping their relative ordering

1 vote

Dual problem of unconstrained linear least squares

1 vote

Understanding the behavior of the trace in calculating the gradient

1 vote
Accepted

Alternating Projection Convergence Proof

1 vote
Accepted

Intuitive difference between cosine similarity and bilinear similarity

1 vote
Accepted

Solution to linear regression lies in the space of training examples - why?

1 vote

About random variable in Probability theory

0 votes
Accepted

How does the SMO algorithm for SVMs guarantee the KKT condition "primal feasibility"?

0 votes

A math proof within a question about homogeneous Poisson process

0 votes
Accepted

Independence of multivariate random variables

0 votes

Algebra operation with real numbers