2,936 reputation
31035
bio website cs.elte.hu/~batka
location Budapest
age 42
visits member for 3 years, 11 months
seen 8 hours ago
I work in functional analysis, my research areas are evolution equations, operator semigroups and delay differential equations.

Jan
19
reviewed Approve Parallel transport on a Hadamard manifold
Jan
9
awarded  Marshal
Jan
7
comment How to show the square root function of a positive semidefinite matrix is differentiable?
Did you try applying the definition?
Jan
6
comment How should one interpret a requirement that a proposal in pure math be “jargon-free?”
I think this question would be much better suited in academia.stackexchange.com
Dec
30
reviewed Approve Shortest rope to capture a sphere of diameter 1
Dec
29
reviewed Approve Looking for interesting, natural models of this algebraic theory in which $x^\dagger$ is not always the multiplicative inverse of $x$
Dec
11
reviewed Approve Max flow with minimal requirements algo problem
Dec
3
answered PDEs on torus $\mathbb T$
Oct
15
reviewed Approve Most 'unintuitive' application of the Axiom of Choice?
Oct
6
answered $C_0$ semigroups on parameterized Banach spaces or moving domains
Oct
4
comment Semigroups on Banach Lattice
But the examples suggest that this cannot be true...
Oct
2
comment Semigroups on Banach Lattice
On the first sight the previous example of @JochenWengenroth can be made one-dimensional by taking $X=\mathbb{R}$ and $Z(t)=e^{-t}$.
Sep
30
awarded  Explainer
Sep
26
awarded  Nice Answer
Sep
20
comment Hilbert triples
$V^*$ is built in relation to $H$. In your situation, $V^*=V$, which is not too helpful.
Sep
19
reviewed Approve Quickly finding optimal subset of pairs of numerator and denominator terms for special objective functions
Sep
9
answered Lecture notes on semi group theory for linear evolution equations
Sep
5
reviewed Approve A general theory of quasi-functors, generalizing from dg-categories to $\mathcal V$-categories, with $\mathcal V$ monoidal model category
Sep
1
reviewed No Action Needed Possible ways to create a graph representation from a distance matrix (through approximation)
Sep
1
comment Vanishing eigenvalues of Jacobian
@WillieWong: right. Thanks.