## Table of contents

Mathematical Problems in Mechanics, Differential Geometry

A nonlinear Korn inequality on a surface with an explicit estimate of the constant
Algebra

Familles de polynômes unitairement parfaits sur ${\mathbb{F}}_{2}$
[Some families of unitary perfect polynomials over ${\mathbb{F}}_{2}$]

Partial differential equations

Instability and nonordering of localized steady states to a classs of reaction-diffusion equations in ${\mathbb{R}}^{N}$
Partial differential equations

Improvement of conditions for boundedness in a fully parabolic chemotaxis system with nonlinear signal production
Partial differential equations

On the existence of ground states of an equation of Schrödinger–Poisson–Slater type