activity
20242026
collaborators

7 papers

math.QA2026

Nuancing the uniqueness of -rationals

Perrine Jouteur, Olga Paris-Romaskevich, Alexander Thomas

We prove uniqueness of -rational numbers up to conjugacy, using character varieties. Despite the uniqueness, we exhibit a two-parameter family of deformations of rationals with…

math.QA2026

Plane geometry of -rationals and Springborn Operations

Perrine Jouteur, Olga Paris-Romaskevich, Alexander Thomas

We study the geometry of -rational numbers, introduced by Morier-Genoud and Ovsienko, for positive real . In particular, we construct and analyse the deformed Farey triangula…

math.CO2026

A mirror deformation of Markov numbers

Léa Bittmann, Perrine Jouteur, Ezgi Kantarcı Oğuz +2

We introduce a deformed squared Markov equation given by . Symmetric solutions of this new equation present a remarka…

math.QA2026

q-Rationals, link invariants and webs

Perrine Jouteur, Hoel Queffelec

We investigate the role of q-rationals in the context of link invariants. This leads us to introduce and study web categories that q-deform Deligne's categories.

math.CO2025

On -deformed Markov numbers. Cohn matrices and perfect matchings with weighted edges

Sam Evans, Perrine Jouteur, Sophie Morier-Genoud +1

We consider a natural -deformation of the classical Markov numbers. This -deformation is closely related to -deformed rational numbers recently introduced by two of us. Bo…

math.CO2025

Symmetries of the q-deformed real projective line

Perrine Jouteur

We generalize in two steps the quantized action of the modular group on q-deformed real numbers introduced by Morier-Genoud and Ovsienko. First, we let the projective general linea…

math.GR2024

Burau representation of and quantization of the rational projective plane

Perrine Jouteur

The braid group naturally acts on the rational projective plane , this action corresponds to the classical integral reduced Burau representation of…