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JOURNALS // Symmetry, Integrability and Geometry: Methods and Applications // Archive

SIGMA, 2021 Volume 17, 001, 26 pp. (Mi sigma1683)

This article is cited in 1 paper

With Wronskian through the Looking Glass

Vassily Gorbounovab, Vadim Schechtmanc

a HSE University, Russia
b Laboratory of Algebraic Geometry and Homological Algebra, Moscow Institute of Physics and Technology, Dolgoprudny, Russia
c Institut de Mathématiques de Toulouse, Université Paul Sabatier, 118 Route de Narbonne, 31062 Toulouse, France

Abstract: In the work of Mukhin and Varchenko from 2002 there was introduced a Wronskian map from the variety of full flags in a finite dimensional vector space into a product of projective spaces. We establish a precise relationship between this map and the Plücker map. This allows us to recover the result of Varchenko and Wright saying that the polynomials appearing in the image of the Wronsky map are the initial values of the tau-functions for the Kadomtsev–Petviashvili hierarchy.

Keywords: MKP hierarchies, critical points, tau-function, Wronskian.

MSC: 37K20, 81R10, 35C08

Received: September 1, 2020; in final form December 27, 2020; Published online January 2, 2021

Language: English

DOI: 10.3842/SIGMA.2021.001



Bibliographic databases:
ArXiv: 2007.04045


© Steklov Math. Inst. of RAS, 2025