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Amelian's user avatar
Amelian's user avatar
Amelian
  • Member for 3 years, 7 months
  • Last seen more than a month ago
1 vote

Countable basis and first countable

1 vote

Why can't an inner product give $ \vec u \cdot \vec v = \|\vec u\|\|\vec v\|\cos(\theta/5) $

1 vote
Accepted

Determining if this set is an equivalence relation verification

2 votes

show existence of implicit function

3 votes
Accepted

Value of $\left|\tan\frac{\pi}{2}\right|$ and continuity of$|\tan x|$

2 votes
Accepted

${x_{k}}\rightarrow x$ in $R^n$ if and only if ${x_{k}}\cdot y\rightarrow x\cdot y$ for all $y\in R^n $

0 votes

The definition of surjective multivalued

0 votes
Accepted

Prove that $0 < g(x) - \ln x \leq \ln\left(\frac{x+2}{x}\right)$ for $x > 0$

2 votes

Eigen vector of a non symmetric matrix.

2 votes
Accepted

Proving that, if a polynomial with real coefficients has all real roots, then the roots of its derivative are real, too.

2 votes

A question about vector representation in polar coordinates.

1 vote

What does this question mean by Diagonal Matrix