# Holder Continuity for a Family of Nonlocal Hypoelliptic Kinetic Equations

## TL;DR

This paper establishes Holder continuity for solutions to a class of nonlocal hypoelliptic kinetic equations, extending regularity results to more general operators with unbounded sources using De Giorgi's method.

## Contribution

It introduces a new regularity result for nonlocal hypoelliptic kinetic equations with general integro-differential operators, allowing unbounded sources and not relying on initial data regularity.

## Key findings

- Holder continuity proven for solutions
- Applicable to a broad class of nonlocal operators
- Allows unbounded source terms

## Abstract

In this work, Holder continuity is obtained for solutions to the nonlocal kinetic Fokker-Planck Equation, and to a family of related equations with general integro-differential operators. These equations can be seen as a generalization of the Fokker-Planck Equation, or as a linearization of non-cutoff Boltzmann. Difficulties arise because our equations are hypoelliptic, so we utilize the theory of averaging lemmas. Regularity is obtained using De Giorgi's method, so it does not depend on the regularity of initial conditions or coefficients. This work assumes stronger constraints on the nonlocal operator than in the work of Imbert and Silvestre [22], but allows unbounded source terms.