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sunspots
  • Member for 10 years, 6 months
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3 votes

What does orthogonal random variables mean?

2 votes

Expectation value of pure state in quantum mechanics

1 vote

There are n balls in a jar labeled with numbers 1,2,...,n. A total of k balls are drawn WITH REPLACEMENT.

1 vote

Change of coordinate matrix proof

1 vote

Complex number isomorphic to certain $2\times 2$ matrices?

1 vote

Let $V=R^3$, and define ${f_1,f_2,f_3} \in V^*$ as follows: $f_1(x,y,z)=x-2y, f_2(x,y,z)=x+y+z$, prove that ${f_1,f_2,f_3}$ is a basis for $V^*$.

1 vote

Arriving at the Logistic function from a Binomial Distribution and Maximum Likelihood

1 vote

Arriving at the Logistic function from a Binomial Distribution and Maximum Likelihood

1 vote

If W is a subspace of V and $x \notin W$, prove that there exists $f \in W^0$ such that $f(x) \neq 0$.

1 vote
Accepted

Ordinary Least Squares Estimate

1 vote

Show that the least squares line must pass through the center of mass

1 vote
Accepted

prove $\ T^* = T^{-1} \iff A^T = A^{-1} $

1 vote
Accepted

Drawing an affine subspace

0 votes

What does $T:V\to W$ mean in vector spaces?

0 votes

Basis for set of nxn matrices with trace = 0

0 votes

Explain the minus sign in the following formula.

0 votes

Expectation of $x$ under multivariate Gaussian distribution

0 votes

Proof that operations of $V/W$ are well defined?

0 votes

What is the distribution of $E[X\mid Y]$?

0 votes

How to find bases for a subspace defined by an equation

0 votes

Finding a dual basis

0 votes

Expected Number of Coin Tosses to Get Five Consecutive Heads

0 votes

Classic $2n$ people around a table problem

0 votes

Null space of a rotation matrix

0 votes

Prove that if $\langle x,z\rangle = 0$ for all $z,$ then $x=0.$

0 votes

Please help me with a single variable derivative applied question.