Types of Linkage of Quadratic Pfister Forms
Commutative Algebra
2018-11-13 v3 Algebraic Geometry
Abstract
Given a field of positive characteristic , and , we prove that if the symbols and in share the same factors in then the symbol in is trivial. We conclude that when , every two totally separably -linked -fold quadratic Pfister forms are inseparably -linked. We also describe how to construct non-isomorphic -fold Pfister forms which are totally separably (or inseparably) -linked, i.e. share all common -fold quadratic (or bilinear) Pfister factors.
Keywords
Cite
@article{arxiv.1806.03603,
title = {Types of Linkage of Quadratic Pfister Forms},
author = {Adam Chapman and Andrew Dolphin},
journal= {arXiv preprint arXiv:1806.03603},
year = {2018}
}