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Classification of quadratic forms over $\mathbb{Z}/n\mathbb{Z}$ - even characteristic case
Let $R$ be a ring (unital, commutative) and $M$ a free $R$-module of finite rank. A quadratic form is a map $q:M\rightarrow R$ such that
$\forall r\in R:\forall m\in M: q(rm)=r^2\cdot q(m)$ and
the ...