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Foldable triangulations of lattice polygons. (English)
Am. Math. Mon. 121, No. 8, 706-710 (2014).
Summary: We give a simple formula for the signature of a foldable triangulation of a lattice polygon in terms of its boundary. This yields lower bounds on the number of real roots of certain systems of polynomial equations known as “Wronski systems”.
Classification: G95
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