# Presentations at conferences, workshops or seminars

How the tangible gets abstracts and vice versa: Experience from classes with mathematically gifted youth

International meeting of the APMP 18.01. – 21.01.2020, ETH Zurich, Zurich, Switzerland.

Characterising k-connected sets in infinite graphs

Colloquium on Combinatorics (Kolkom) 8.11. – 9.11.2019, University of Paderborn, Paderborn, Germany.

How do we decide which mathematics is valuable: Empirical findings and philosophical thoughts

Novembertagung on the History and Philosophy of Mathematics 31.10. – 02.11.2019, Strasbourg, France; joint talk with D. Sarikaya.

Is a definition normative?

Novembertagung on the History and Philosophy of Mathematics 31.10. – 02.11.2019, Strasbourg, France; joint talk with D. Sarikaya.

Characterising k-connected sets in infinite graphs

DMV Annual meeting 23.9. – 26.9.2019, Karlsruhe Institute of Technology, Karlsruhe, Germany.

How to find suitable problems for mathematically gifted students within enrichment courses

DMV Annual meeting 23.9. – 26.9.2019, Karlsruhe Institute of Technology, Karlsruhe, Germany; joint talk with D. Sarikaya.

Forcing Hamiltonicity in locally finite graphs via forbidden induced subgraphs

Colourings, Independence and Domination (CID) 15.09. – 20.09.2019, Piechowice, Poland.

Constructing a uniquely Hamiltonian infinite graph all whose vertices and ends have degree 3

28th Workshop on Cycles and Colourings (C&C) 01.09. – 06.09.2019, Nový Smokovec, Slovakia.

Variations in open problem fields as a tool for mathematical education: from basics to open questions in 90 minutes

11th International Mathematical Creativity and Giftedness Conference (MCG11) 22.08. – 24.08.2019, Hamburg, Germany; joint workshop with D. Sarikaya.

Text-driven variation as a vehicle for generalisation, abstraction, proofs and refutations: an example about tilings and Escher within mathematical education

16th International Congress on Logic, Methodology and Philosophy and Technology (CLMPST) 05.08. – 10.08.2019, Prague, Czech Republic.

The development of epistemic objects in mathematical practice: Shaping the infinite realm driven by analogies from finite mathematics in the area of Combinatorics

16th International Congress on Logic, Methodology and Philosophy and Technology (CLMPST) 05.08. – 10.08.2019, Prague, Czech Republic.

Progress on the Ubiquity Conjecture

27th British Combinatorial Conference 29.07. – 02.08.2019, Birmingham, United Kingdom.

Variations in open problem fields as a tool for mathematical education: From basics to open questions in the twinkling of an eye

4th Interdisciplinary Scientific Conference Mathematical Transgressions 13.03. – 16.03.2019, Cracow, Poland; joint talk with D. Sarikaya.

Analogical Results as Data for Theory Choice in Mathematical Research: The case of infinite Graph Theory

Analogical Reasoning in Science and Mathematics 26.10. – 28.10.2018, Ludwig-Maximilians University, Munich, Germany; joint talk with D. Sarikaya.

The Infinite Lucchesi-Younger Conjecture

GT2018 29.08. – 01.09.2018, Nyborg, Denmark.

Geodesic cuts

Structure in Graphs and Matroids (SiGMa) 17.07. – 21.07.2017, University of Waterloo, Ontario, Canada.

Forcing Hamilton cycles in infinite graphs

DMV Annual meeting 21.9. – 25.9.2015, University of Hamburg, Germany.