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Principal stratum in the moduli space of real-normalized differentials with a single pole

Marina Nenasheva

Abstract

Meromorphic differentials on Riemann surfaces are said to be real-normalized if all their periods are real. Moduli spaces of real-normalized differentials on Riemann surfaces of given genus with prescribed orders of their poles and residues admit stratification by orders of zeroes of the differentials. Subsets of real-normalized differentials with the fixed polarized module of periods compose isoperiodic subspaces, which also admit this stratification. In this work we prove the connectedness of the principal stratum for the isoperiodic subspaces in the space of real-normalized differentials with a single pole of order two when all the periods are incommesurable.

Principal stratum in the moduli space of real-normalized differentials with a single pole

Abstract

Meromorphic differentials on Riemann surfaces are said to be real-normalized if all their periods are real. Moduli spaces of real-normalized differentials on Riemann surfaces of given genus with prescribed orders of their poles and residues admit stratification by orders of zeroes of the differentials. Subsets of real-normalized differentials with the fixed polarized module of periods compose isoperiodic subspaces, which also admit this stratification. In this work we prove the connectedness of the principal stratum for the isoperiodic subspaces in the space of real-normalized differentials with a single pole of order two when all the periods are incommesurable.
Paper Structure (14 sections, 3 equations, 5 figures)

This paper contains 14 sections, 3 equations, 5 figures.

Figures (5)

  • Figure 1: Пример: a) сепаратрисы на поверхности рода $1$; b) граф сепаратрис; c) $8$-угольник, являющийся результатом разрезания поверхности по графу сепаратрис; d) система разрезов комплексной прямой; e) дуговая диаграмма, отвечающая этой системе разрезов
  • Figure 2: Различные варианты второго движения Васильева
  • Figure 3: $2$-караваны и соответствующие им матрицы форм пересечений
  • Figure 4: Последовательность движений Васильева $2$-караванов, реализующих преобразование $C$
  • Figure 5: Порядок приведения матрицы к диагональной форме

Theorems & Definitions (10)

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  • proof : Доказательство Теоремы \ref{['teorema']}
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