# Gebhard Martin

Mathematisches Institut

Universität Bonn

Endenicher Allee 60

53115 Bonn

Tel.: +49 (0)228 73 62267

Mail: gmartin

Raum: 1.041

## Teaching

##### Winter 2023/24:

- Selected Topics in Algebraic Geometry: Algebraic Surfaces
- Graduate Seminar: Cubic Hypersurfaces

##### Summer 2023:

##### Winter 2022/23:

##### Summer 2022:

##### Winter 2021/22:

##### Summer 2021:

- Finite Group Schemes (Lecturer)
- Algebraic Geometry 2 (Assistant)

##### Winter 2020/21:

- Algebraic Geometry 1 (Assistant)
- Grundzüge der Mathematik 1 (Assistant)

##### Summer 2019:

- Linear Algebra 2 (Assistant)

##### Winter 2018/19:

- Linear Algebra 1 (Assistant)

##### Summer 2018:

- Algebra 1 (Assistant)

## Articles and Preprints

- Nodal Enriques surfaces are Reye congruences (with G. Mezzedimi and D. Veniani), 16 pages
- Bounding geometrically integral del Pezzo surfaces (with F. Bernasconi), 26 pages
- Automorphisms of del Pezzo surfaces in odd characteristic (with I. Dolgachev), 35 pages
- Automorphisms of del Pezzo surfaces in characteristic 2 (with I. Dolgachev), 44 pages
- RDP del Pezzo surfaces with global vector fields in odd characteristic (with C. Stadlmayr),

Accepted for publication in**Algebraic Geometry**, 33 pages - Enriques surfaces of non-degeneracy 3 (with G. Mezzedimi and D. Veniani), 24 pages
- On extra-special Enriques surfaces (with G. Mezzedimi and D. Veniani),

Accepted for publication in**Mathematische Annalen**, 9 pages - Torsors over the Rational Double Points in Characteristic p (with C. Liedtke and Y. Matsumoto), 76 pages
- Linearly Reductive Quotient Singularities (with C. Liedtke and Y. Matsumoto), 51 pages
- Automorphism groups of rational elliptic and quasi-elliptic surfaces in all characteristics (with I. Dolgachev),

**Advances in Mathematics**Volume 400, 14 May 2022, 108274 - Automorphism schemes of (quasi-)bielliptic surfaces ,

**Épijournal de Géométrie Algébrique**, Volume 6 (2022), Article no. 9 - Weak del Pezzo surfaces with global vector fields (with C. Stadlmayr),

Accepted for publication in**Geometry & Topology**, 50 pages - Infinitesimal automorphisms of algebraic varieties and vector fields on elliptic surfaces ,

Accepted for publication in**Algebra & Number Theory**, 44 pages - Automorphisms of unnodal Enriques surfaces, 22 pages
- Numerically trivial automorphisms of Enriques surfaces in characteristic 2 (with I. Dolgachev),

**J. Math. Soc. Japan**Volume 71, Number 4 (2019), 1181--1200. - Classification of Enriques surfaces with finite automorphism group in characteristic 2 (with T. Katsura and S. Kondo),

**Algebraic Geometry**Volume 7, Issue 4 (July 2020), 390--459. - Enriques surfaces with finite automorphism group in positive characteristic,

**Algebraic Geometry**Volume 6, Issue 5 (September 2019), 592--649.

## News

Dr. Regula Krapf receives university teaching award

Prof. Catharina Stroppel joined the North Rhine-Westphalia Academy for Sciences and Arts

Prof. Daniel Huybrechts receives the Compositio Prize for the periode 2017-2019

Prof. Catharina Stroppel receives Gottfried Wilhelm Leibniz Prize 2023

Rajula Srivastava receives Association for Women in Mathematics Dissertation Prize

Prof. Ana Caraiani wins a New Horizons in Mathematics Prizes 2023

Pius XI Medal awarded to Professor Peter Scholze

Prof. Valentin Blomer und Prof. Georg Oberdieck erhalten ERC grants

Grants for Mathematics students from Ukraine

Prof. Jessica Fintzen is awarded a Whitehead Prize of the London Mathematical Society

Prof. Peter Scholze elected as Foreign Member of the Royal Society

Bonner Mathematik belegt bei Shanghai Ranking den 1. Platz in Deutschland und weltweit den 13. Platz

Prof. Daniel Huybrechts erhält gemeinsam mit Debarre, Macri und Voisin ERC Synergy Grant