# Gebhard Martin

Mathematisches Institut

Universität Bonn

Endenicher Allee 60

53115 Bonn

Tel.: +49 (0)228 73 62267

Mail: gmartin

Raum: 1.041

## Teaching

##### Summer 2024:

##### Winter 2023/24:

##### Summer 2023:

##### Winter 2022/23:

##### Summer 2022:

##### Winter 2021/22:

##### Summer 2021:

- Finite Group Schemes
- 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), Accepted for publication in
**Journal für die reine und angewandte Mathematik (Crelle)**, 16 pages - Bounding geometrically integral del Pezzo surfaces (with F. Bernasconi), 26 pages
- Automorphisms of del Pezzo surfaces in odd characteristic (with I. Dolgachev), Accepted for publication in
**Journal of the London Mathematical Society**, 35 pages - Automorphisms of del Pezzo surfaces in characteristic 2 (with I. Dolgachev), Accepted for publication in
**Algebra & Number Theory**, 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),

Accepted for publication in**Journal of the European Mathematical Society**, 24 pages - On extra-special Enriques surfaces (with G. Mezzedimi and D. Veniani),

**Mathematische Annalen**Volume 387, Number 1-2, 133--143 - Torsors over the Rational Double Points in Characteristic p (with C. Liedtke and Y. Matsumoto), Accepted for publication in
**Astérisque**, 76 pages - Linearly Reductive Quotient Singularities (with C. Liedtke and Y. Matsumoto), Accepted for publication in
**Astérisque**, 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 ,

**Algebra & Number Theory**Volume 16, Number 7 (2022), pp. 1655–-1704. - 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

Bonn mathematics performs excellently again in QS ranking

Stefan Schwede is invited speaker at the ECM 2024 in Sevilla

Jessica Fintzen wins Cole Prize

Regula Krapf receives university teaching award

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

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

Catharina Stroppel receives Gottfried Wilhelm Leibniz Prize 2023

Grants for Mathematics students from Ukraine

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

Peter Scholze elected as Foreign Member of the Royal Society