C. Bisi

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20242026

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math.AG2025

Forms and Complex Manifolds

Cinzia Bisi, Paolo Cascini, Luca Tasin

We study the intersection form $F_{X}$ on the second cohomology group $H^{2} (X, Z)$ of a compact KÃ¤hler manifold $X$ of dimension $n$ . Although the structure of $F_{X}$ is rela…

math.AG2024

Some interesting birational morphisms of smooth affine quadric $3$ -folds

Cinzia Bisi, Jonathan D. Hauenstein, Tuyen Trung Truong

We study a family of birational maps of smooth affine quadric 3-folds, {over the complex numbers}, of the form $x_{1} x_{4} - x_{2} x_{3} =$ constant, which seems to have some (among many other…

Forms and Complex Manifolds

Some interesting birational morphisms of smooth affine quadric 3-folds

Some interesting birational morphisms of smooth affine quadric $3$ -folds