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math.AG2012
Solving a sparse systems using linear algebra
César Massri
We give a new theoretical tool to solve sparse systems with finitely many solutions. It is based on toric varieties and basic linear algebra; eigenvalues, eigenvectors and coeffici…
math.AG2012
Examples of varieties of structures
Cesar Massri
In this article we will introduce, among others, the variety of subcomplexes and the variety of maps between complexes of given rank. Also, varieties of -structure li…
math.AG2012
Irreducibility of quadratic hulls of osculating varieties of closed orbits
Cesar Massri
Let be a connected complex semisimple algebraic group, let be an irreducible -module of highest weight , and let \[ X_{dλ}=G\cdot[v_{dλ}] \subset \mathbb P V_{dλ} \…