Vojtěch Kaluža

collaborators

3 papers

math.MG2026

Extending Bilipschitz Mappings between Separated Nets

Michael Dymond, VojtÄch KaluÅ¾a, Vojtěch Kaluža

We provide a new characterisation of the decades old open problem of extending bilipschitz mappings given on a Euclidean separated net. In particular, this allows for the complete…

math.MG2026

Planar Bilipschitz Extension from Separated Nets

Michael Dymond, VojtÄch KaluÅ¾a, Vojtěch Kaluža

We prove that every $L$ -bilipschitz mapping $Z^{2} \to R^{2}$ can be extended to a $C (L)$ -bilipschitz mapping $R^{2} \to R^{2}$ and provide a polynomial upp…

math.CO2024

Three observations on the Colin de VerdiÃ¨re spectral graph parameter

VojtÄch KaluÅ¾a, Vadym Koval

In this small note, we collect several observations pertaining to the famous spectral graph parameter $I^¼$ introduced in 1990 by Y. Colin de VerdiÃ¨re. This parameter is defined as…