activity
20092026
most citedBigalois extensions and the graph isomorphism game

45 citations · 198 across the 112 of their papers we have counts for

collaborators
Showing math.FAShow all

8 papers · 1 filter

math.FA2026

Frame eversion and contextual geometric rigidity

Alexandru Chirvasitu

We prove rigidity results describing contextually-constrained maps defined on Grassmannians and manifolds of ordered independent line tuples in finite-dimensional vector or Hilbert…

math.FA2025

Equivariant Banach-bundle germs

Alexandru Chirvasitu

Consider a continuous bundle of Banach/Hilbert spaces or Banach/-algebras over a paracompact base space, equivariant for a compact Lie group op…

math.FA2025

Spans and convex combinations of boundary-valued continuous functions

Alexandru Chirvasitu

For an -dimensional real Banach space with unit ball and a topological space arbitrary elements in are always expressible as linear c…

math.FA2024

Finite-index phenomena and the topology of bundle singularities

Alexandru Chirvasitu

A classical branched cover is an open surjection of compact Hausdorff spaces with uniformly bounded finite fibers and analogously, a quantum branched cover is a unital embedd…

math.FA2024

Symmetric monoidal categories of conveniently-constructible Banach bundles

Alexandru Chirvasitu

We show that a continuously-normed Banach bundle over a compact Hausdorff space whose space of sections is algebraically finitely-generated (f.g.) over is…

math.FA2024

Small Banach bundles and modules

Alexandru Chirvasitu

We characterize those (continuously-normed) Banach bundles with compact Hausdorff base whose spaces of global continuous sections are topologica…