Let $A$ be a noetherian ring and let $M$ be a finitely generated $A$-module. Let $F$ be a free $A$-module and let $d: F \to M$ be a homomorphism which maps a basis of $F$ to a minimal set of generators of $M$. Consider the submodule $N$ of $\bigwedge^2 F$ which is generated by the elements $x \wedge y$ where $x \in \ker (d)$. It is clear that $N$ lies the kernel of the induced map $\hat{d}:\bigwedge^2 F \to \bigwedge^2M$. I am interested in the quotient $\ker(\hat{d}) / N$.

My question: Are there some results concerning this object? For example in the case where $A$ is a local ring? Is there perhaps some geometric interpretation of it in the case where $A$ is a finitely generated algebra over some field $k$?