2 citations · 2 across the 5 of their papers we have counts for
7 papers
Defective dual varieties for real spectra
Jens Forsgård
We introduce an invariant of a finite point configuration which we denote the cuspidal form of . We use this invariant to extend Esterov's character…
On transformations of A-hypergeometric functions
Jens Forsgård, Laura Felicia Matusevich, Aleksandra Sobieska
We propose a systematic study of transformations of -hypergeometric functions. Our approach is to apply changes of variables corresponding to automorphisms of toric rings, to Eu…
On the multivariate Fujiwara bound for exponential sums
Jens Forsgård
We prove the multivariate Fujiwara bound for exponential sums: for a -variate exponential sum with scaling parameter , if is contained in the amoeba ,…
On the parametric behavior of A-hypergeometric series
Christine Berkesch Zamaere, Jens Forsgård, Laura Felicia Matusevich
We describe the parametric behavior of the series solutions of an A-hypergeometric system. More precisely, we construct explicit stratifications of the parameter space such that, o…
On dimer models and coamoebas
Jens Forsgård
We describe the relationship between dimer models on the real two-torus and coamoebas of curves in (\CC^\times)^2. We show, inter alia, that the dimer model obtained from the shell…
Coamoebas of polynomials supported on circuits
Jens Forsgård
We study coamoebas of polynomials supported on circuits. Our results include an explicit description of the space of coamoebas, a relation between connected components of the coamo…