تقرير
Markov numbers and rational $\mathbb{C}^*$-surfaces
| العنوان: | Markov numbers and rational $\mathbb{C}^*$-surfaces |
|---|---|
| المؤلفون: | Hausen, Jürgen, Király, Katharina, Wrobel, Milena |
| سنة النشر: | 2024 |
| المجموعة: | Mathematics |
| مصطلحات موضوعية: | Mathematics - Algebraic Geometry, 14L30, 14J26, 14J10, 14D06 |
| الوصف: | The Markov triples, that means the positive integer solutions of the equation $x^2+y^2+z^2=3xyz$, form the vertex set of the Markov tree. Each Markov triple defines a weighted projective plane, which gives a geometric interpretation of the vertex. We exhibit a class of rational, projective $\mathbb{C}^*$-surfaces representing the edges of the Markov tree in the sense that they admit coverings onto the adjacent weighted projective planes. Our main result shows that the surfaces representing the Markov tree are precisely the normal degenerations of the projective plane admitting a non-trivial $\mathbb{C}^*$-action. Comment: 14 pages, minor update, references added |
| نوع الوثيقة: | Working Paper |
| URL الوصول: | http://arxiv.org/abs/2405.04862 |
| رقم الأكسشن: | edsarx.2405.04862 |
| قاعدة البيانات: | arXiv |
| الوصف غير متاح. |