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This Week in Mathematics

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Next Week [Apr 05, 2026 - Apr 11, 2026]
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Entries for this week: 4
Wednesday April 08, 2026

Biomathematics Journal Club
Power in Networks: The Medici
    - Dana Hughes, FSU
Time: 5:00 Room: Dirac Library
Thursday April 09, 2026

Algebra seminar
Tropical correspondence theorems for plane curve counts over arbitrary fields
    - Sabrina Pauli, TU Darmstadt
Time: 3:05pm Room: Zoom
Abstract/Desc: We study the problem of counting rational curves of fixed degree on a toric del Pezzo surface subject to point conditions. Over algebraically closed fields, this count is invariant under the choice of point conditions. Over non-algebraically closed fields, however, the invariance fails. For real numbers, Welschinger's groundbreaking work introduced a signed count of real curves that restores invariance. Building on this, Levine and Kass-Levine-Solomon-Wickelgren have developed curve counts over arbitrary fields that not only generalize Welschinger's signed counts and classical counts over algebraically closed fields, but also encode much richer arithmetic information. In this talk I will survey these different approaches to counting rational curves with point conditions and discuss a recent joint result with A. Jaramillo Puentes, H. Markwig, and F. Röhrle. We establish a tropical correspondence theorem for curve counts over arbitrary fields, identifying the count of algebraic curves with point conditions with a weighted count of their tropical counterparts with point conditions. The latter are combinatorial objects and there are several purely combinatorial methods to find all tropical curves with point conditions.
Financial Math
TBD
    - Xin Zhang, New York University
Time: 3.05 Room: LOV 231
Friday April 10, 2026

Mathematics Colloquium [url]
Math Honors Day
    - Monica Hurdal, FSU
Time: 3:05 Room: 101
Abstract/Desc: Faculty, staff, and students are invited to join us as we celebrate and award our graduate and undergraduate students for their achievements and excellence in academics, teaching, and service.

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