M. Kuhn

activity

20202025

collaborators

4 papers

math.CO2025

Disproof of the Odd Hadwiger Conjecture

Marcus Kühn, Lisa Sauermann, Raphael Steiner +1

We prove that there exist graphs which do not contain $K_{t}$ as an odd minor and whose chromatic number is at least $(\frac{3}{2} - o (1)) t$ . This disproves, in a strong form, the odd Had…

math.RT2024

Representations of currents taking values in $P G L (2, Q_{q})$

Maria Gabriella Kuhn

Let $G = P G L (2, Q_{q})$ . In this paper we shall investigate the group of measurable currents taking values in $G$ . The key observation is that $G$ is acting by automorphisms on a homoge…

math.HO2024

On the projection of the three vertices of an equilateral triangle

M. Gabriella Kuhn, N. Silvio Riccobon

We prove the following Theorem: Given any three distinct points on a straight line r, there exist an equilateral triangle, whose circumcenter lies on r, such that the projections o…

math.RT2020

Free group representations from vector-valued multiplicative functions, III

M. Gabriella Kuhn, Sandra Saliani, Tim Steger

Let $π$ be an irreducible unitary representation of a finitely generated nonabelian free group $Γ$ ; suppose $π$ is weakly contained in the regular representation. In 2001 the first…

Disproof of the Odd Hadwiger Conjecture

Representations of currents taking values in PGL(2,Qq​)

On the projection of the three vertices of an equilateral triangle

Free group representations from vector-valued multiplicative functions, III

Representations of currents taking values in $P G L (2, Q_{q})$