In mathematics, a torsion sheaf is a sheaf of abelian groups on a site for which, for every object U, the space of sections is a torsion abelian group. Similarly, for a prime number p, we say a sheaf is p-torsion if every section over any object is killed by a power of p.
A torsion sheaf on an étale site is the union of its constructible subsheaves. [1]
In mathematics, a torsion sheaf is a sheaf of abelian groups on a site for which, for every object U, the space of sections is a torsion abelian group. Similarly, for a prime number p, we say a sheaf is p-torsion if every section over any object is killed by a power of p.
A torsion sheaf on an étale site is the union of its constructible subsheaves. [1]