Martins Bruveris's user avatar
Martins Bruveris's user avatar
Martins Bruveris's user avatar
Martins Bruveris
  • Member for 7 years, 1 month
  • Last seen more than 5 years ago
7 votes
Accepted

Is every flat manifold with boundary locally isometric to the Euclidean half-space?

5 votes
Accepted

Stationary point of a smooth function $f:\Bbb R^2\to \Bbb R$

5 votes
Accepted

Fibonacci Numbers proof, circular reasoning?

5 votes

Why have the Mathematicians defined the boundedness in Functional Analysis so much different from that in Calculus?

5 votes

book recommendation for real analysis

4 votes

Union of connected sets which have pairwisely nonempty intersections

4 votes
Accepted

Are smooth functions generically immersions?

4 votes
Accepted

Prove each eigenvalue of $T/U$ is an eigenvalue of $T$.

3 votes
Accepted

Calculus of variations condition

3 votes

Rudin chapter 3 Functional Analysis problem 3

3 votes
Accepted

An alternative formula for computing curvature of a curve

3 votes
Accepted

proof: $r \in \langle S\setminus \{r\}\rangle \leftrightarrow \langle S\rangle = \langle S\setminus \{r\} \rangle$

3 votes

Isometric immersions between manifolds with boundary are locally distance preserving?

3 votes
Accepted

Reparametrization of a curve

3 votes
Accepted

Two representations of the same manifold.

3 votes
Accepted

Only one chart to parameterize a unit-cylinder

3 votes
Accepted

Pedagogy question about defining the Riemann Integral

2 votes

A sequence in $[0,1]\cap\mathbb Q$ with no convergent subsequence in $[0,1]\cap\mathbb Q$

2 votes

Convergence of two series, $\sum_{i=1}^\infty \frac{\sqrt{n+1}-\sqrt{n-1}}{n}$ and $\sum_{i=1}^\infty \frac{\ln(n!)}{n^a}$

2 votes
Accepted

Limit point for the direct limit of tower of topological spaces.

2 votes

List of functions with $f(x)=\dfrac{d\,f(x)}{dx}$ like $f(x)=0$ or $f(x)=e^x$

2 votes
Accepted

Simplifying definitions

2 votes
Accepted

Use of $\lim_{t\downarrow 0}$ and $\lim_{t\to 0^+}$

2 votes
Accepted

Is every function Lipschitz in some Riemannian metric?

2 votes
Accepted

Can we define some like a "dimensionality" to infinite sets?

1 vote

Show that if $A \oplus B = A \oplus C$, then B=C

1 vote

Boundedness of a real-valued sequence

1 vote

Given $f(\frac{x_1 + x_2}{2})$ $\le\frac{(f(x_1) + f(x_2))}{2}$

1 vote

The reverse of finding the arc length

1 vote
Accepted

Convergence in metrisable topological spaces and Cauchy sequences