Invariants of simple algebras

We determine the group of invariants with values in Galois cohomology with coefficients \documentclass[12pt]{minimal} \usepackage{amsmath} \usepackage{wasysym} \usepackage{amsfonts} \usepackage{amssymb} \usepackage{amsbsy} \usepackage{mathrsfs} \usepackage{upgreek} \setlength{\oddsidemargin}{-69pt} \begin{document}$${\mathbb{Z}/2\mathbb{Z}}$$\end{document} of central simple algebras of degree at most 8 and exponent dividing 2.