V. Tsanov

activity

20102025

most citedQuantum marginals from pure doubly excited states

13 citations · 25 across the 10 of their papers we have counts for

collaborators

Showing math.RTShow all

8 papers · 1 filter

math.RT2024

Partial convex hulls of coadjoint orbits and degrees of invariants

Valdemar V. Tsanov

We study properties of convex hulls of (co)adjoint orbits of compact groups, with applications to invariant theory and tensor product decompositions. The notion of partial convex h…

math.RT2023

Representations of large Mackey Lie algebras and universal tensor categories

Ivan Penkov, Valdemar Tsanov

We extend previous work by constructing a universal abelian tensor category $T_{t}$ generated by two objects $X, Y$ equipped with finite filtrations $0\subsetneq X_0\subsetneq .…

math.RT2021

On reductive subgroups of reductive groups having invariants in almost all representations

Valdemar Tsanov, Yana Staneva

Let $G$ and $G ~$ be connected complex reductive Lie groups, $G$ semisimple. Let $Λ^{+}$ be the monoid of dominant weights for a positive root system $Δ^{+}$ , and let $l (w)$ be th…

math.RT2018

Secant varieties and degrees of invariants

Valdemar V. Tsanov

The ring of invariant polynomials $C [V]^{G}$ over a given finite dimensional representation space $V$ of a complex reductive group $G$ is known, by a famous theorem of Hilb…

math.RT2016

Unstable loci in flag varieties and variation of quotients

Henrik Seppänen, Valdemar V. Tsanov

We consider the action of a semisimple subgroup $G^$ of a semisimple complex group $G$ on the flag variety $X = G / B$ , and the linearizations of this action by line bundles $\math…

math.RT2015

On momentum images of representations and secant varieties

Elitza Hristova, Tomasz Maciazek, Valdemar V. Tsanov

Let $K$ be a connected compact semisimple group and $V_{λ}$ be an irreducible unitary representation with highest weight $λ$ . We study the momentum map $μ:\mathbb P(V_λ)\to\mathfrak…

math.RT2015

Geometric Invariant Theory for principal three-dimensional subgroups acting on flag varieties

Henrik Seppänen, Valdemar V. Tsanov

Let G be a semisimple complex Lie group. In this article, we study Geometric Invariant Theory on a flag variety G/B with respect to the action of a principal 3-dimensional simple s…

math.RT2010★ 1 cited

Embeddings of semisimple complex Lie groups and cohomological components of modules

Valdemar V. Tsanov

Let G --> G' be an embedding of semisimple complex Lie groups, let B and B' be a pair of nested Borel subgroups, and let f:G/B --> G'/B' be the associated equivariant embedding of…