The Cohomology Ring of the Deligne-Mumford Moduli Space of Real Rational Curves with Conjugate Marked Points
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arXiv
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| Format: | Preprint |
| Veröffentlicht: |
2023
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| _version_ | 1866911759117320192 |
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| author | Chen, Xujia Georgieva, Penka Zinger, Aleksey |
| author_facet | Chen, Xujia Georgieva, Penka Zinger, Aleksey |
| contents | It is a long-established and heavily-used fact that the integral cohomology ring of the Deligne-Mumford moduli space of (complex) rational curves is the polynomial ring on the boundary divisors modulo the ideal generated by the obvious geometric relations between them. We show that the rational cohomology ring of the Deligne-Mumford moduli space of real rational curves with conjugate marked points only is the polynomial ring on certain (``complex") boundary divisors and real boundary hypersurfaces modulo the ideal generated by the obvious geometric relations between them and the geometric relation in positive dimension and codimension identified in a previous paper. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2305_08798 |
| institution | arXiv |
| publishDate | 2023 |
| record_format | arxiv |
| spellingShingle | The Cohomology Ring of the Deligne-Mumford Moduli Space of Real Rational Curves with Conjugate Marked Points Chen, Xujia Georgieva, Penka Zinger, Aleksey Algebraic Geometry High Energy Physics - Theory Algebraic Topology Symplectic Geometry 55M99, 14N99, 53D45 It is a long-established and heavily-used fact that the integral cohomology ring of the Deligne-Mumford moduli space of (complex) rational curves is the polynomial ring on the boundary divisors modulo the ideal generated by the obvious geometric relations between them. We show that the rational cohomology ring of the Deligne-Mumford moduli space of real rational curves with conjugate marked points only is the polynomial ring on certain (``complex") boundary divisors and real boundary hypersurfaces modulo the ideal generated by the obvious geometric relations between them and the geometric relation in positive dimension and codimension identified in a previous paper. |
| title | The Cohomology Ring of the Deligne-Mumford Moduli Space of Real Rational Curves with Conjugate Marked Points |
| topic | Algebraic Geometry High Energy Physics - Theory Algebraic Topology Symplectic Geometry 55M99, 14N99, 53D45 |
| url | https://arxiv.org/abs/2305.08798 |