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Taipei Postdoc Seminar
 
14:00 - 15:00, December 2, 2020 (Wednesday)
Room 515, Cosmology Building, NTU
(臺灣大學次震宇宙館 515研討室)
Some Algebraic Surfaces with Canonical Map of Degree 10, 12, 14
Bin Nguyen (NCTS)

Abstract:

Surfaces of general type with canonical map of degree d bigger than 8 have bounded geometric genus and irregularity. In particular if d 10 the irregularity is at most 2. In this talk, I will present the existence of surfaces with d = 10 and all possible irregularities, surfaces with d = 12 and irregularities 1 or 2 and surfaces with d = 14 and irregularities 0 or 1. These results together with the construction by C. Rito of a surface with d = 12 and irregularity 0 show that all the possibilities for the irregularity in the cases d = 10, d = 12 can occur, whilst the existence of a surface with d = 14 and irregularity 2 is still an open problem.


 

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