3,106 reputation
31238
bio website cs.elte.hu/~batka
location Budapest
age 43
visits member for 4 years, 6 months
seen 2 hours ago
I work in functional analysis, my research areas are evolution equations, operator semigroups and delay differential equations.

2h
answered Restriction of a semigroup to a form domain
1d
comment Discrete time equivalent to ODE
This question does not belong here. Try use the variation-of constants formula for the first inhomogeneous equation, then you will see.
1d
reviewed Reviewed Linear Independence for functions defined by integration
1d
reviewed Leave Open Solutions of an nonlinear evolution problem
1d
reviewed Leave Open Where have you used computer programming in your career as an (applied/pure) mathematician?
2d
reviewed Close $AXB$ sort of decomposition?
2d
reviewed Reject Standard name / symbol for intersection in Brouwerian lattices
2d
reviewed Reject Is there an official name for the intersection of the join-irreducible representations of two lattice elements?
2d
reviewed Close Tensor product of algebra group and banach space
2d
comment Tensor product of algebra group and banach space
Of course the statement depends on the norm you take on the algebraic tensor product... But you can find the answer in almost every book where tensor products are discussed in a bit more detail.
2d
reviewed Leave Open Is $\mathbb{R}^3 \setminus \mathbb{Q}^3$ simply connected?
2d
reviewed Approve Global dimenson of quivers with relations
Aug
29
reviewed Approve Prove $R$ is a finite ring
Aug
28
reviewed Reviewed Prove $R$ is a finite ring
Aug
28
reviewed Leave Closed Forcing and $\mathbb{P}$-name
Aug
28
reviewed Leave Closed Preservation of $\diamondsuit$ by ccc forcings of size $\leq \omega_1$
Aug
28
reviewed Reject coproduct of the homology of iterated loop space on spheres
Aug
27
reviewed Close How to find $B$ by solving the following linear system: $s_k$ $B$ ${s_k}^T$ $=1,$
Aug
27
reviewed Close Are all derivatives of sinc function bounded on real axis?
Aug
25
reviewed Close a question on maximal ideals in rings