21 citations · 106 across the 19 of their papers we have counts for
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math.AG2014★ 2 cited
Algebraic boundary of matrices of nonnegative rank at most three
Rob H. Eggermont, Emil Horobet, Kaie Kubjas
The Zariski closure of the boundary of the set of matrices of nonnegative rank at most 3 is reducible. We give a minimal generating set for the ideal of each irreducible component.…
math.AG2014★ 10 cited
Finiteness properties of congruence classes of infinite matrices
Rob Eggermont
We look at spaces of infinite-by-infinite matrices, and consider closed subsets that are stable under simultaneous row and column operations. We prove that up to symmetry, any of t…
math.AG2014★ 12 cited
Plücker varieties and higher secants of Sato's Grassmannian
Jan Draisma, Rob H. Eggermont
Every Grassmannian, in its Plücker embedding, is defined by quadratic polynomials. We prove a vast, qualitative, generalisation of this fact to what we call Plücker varieties. A Pl…