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K. Miller's user avatar
K. Miller's user avatar
K. Miller's user avatar
K. Miller
  • Member for 8 years, 9 months
  • Last seen more than a week ago
23 votes
Accepted

Distance between two hyperplanes

22 votes
Accepted

Find the bearing angle between two points in a 2D space

21 votes

Probability that a quadratic equation has real roots

11 votes
Accepted

Compute the gradient of mean square error

10 votes

Why does the eigenvalues of $AA^T$ are the squares of the singular values of $A$?

9 votes

Sum of Permutations from 0 to n

7 votes

If $A^2=0$, then $\mathrm{rank}(A) \le \frac{n}{2}$

7 votes
Accepted

Does the inverse of a matrix have the same condition number as the matrix?

6 votes

The Inverse of a Fourth Order Tensor

6 votes

Why is rank $uv^{T}$ always equal to 1?

5 votes

Matrix $B^3 = B-2I$

4 votes

$I+B$ is invertible if $B^{k} = 0$

4 votes
Accepted

How to do a unitary diagonalization of a normal matrix?

4 votes
Accepted

Given that $\frac{n!}{(n-x)!}+\frac{x!}{(x-n)!}=48$, find the value of $\binom{n+4}{x-3}$

4 votes

If square matrix A satisfying $A^2-4A+4I=0$ does it follow that A is diagonizable?

4 votes
Accepted

Show that if the leading principal minors of a nonsingular $n\times n$ matrix $A$ are all nonzero then the matrix $A$ has $LU$ factorization

4 votes

How to convert a random matrix to Unitary Matrix?

4 votes

How to calculate this determinant?

3 votes
Accepted

If $A^{-1}$ has been precomputed, is there an efficient way to compute: $(A+λI)^{-1}$

3 votes

Finding the coefficients of a quadratic equation with complex number roots

3 votes

The range of $S$ is invariant under $T$

3 votes

Ordinary Least Squares (OLS) + Matlab

3 votes
Accepted

Method of successive approximations to solve y'=y^2

3 votes

How to determine coercive functions

3 votes
Accepted

Stuck on trivial proof show $(I - A)$ is non singular if $\|A\| < 1$

3 votes
Accepted

Prove that there is a $u\in V$, such that $<u,v_i>$ is greater than zero, for every $i \in {\{1,..,m\}}$.

3 votes
Accepted

Proving that if $f'(x)$ exists then $f(x)$ is continuous

3 votes
Accepted

Mean square error using linear regression gives a convex function

3 votes
Accepted

Need help developing a function

3 votes
Accepted

Ridge regression to fight ill-conditioning

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