Changes

Changes from Mercurial (hg https://foss.heptapod.net/isa-afp/afp-devel/ default)

Changeset 14124:825e817a0992 by desharna: merged
Changeset 14123:0a317f2db21b by desharna: tuned proof
The file was modified	`thys/Polynomials/Power_Products.thy`