Johannes Marti

I am a postdoc at the ILLC in Amsterdam working with Yde Venema on proof systems for modal fixpoint logics.

Before, I did postdocs with Carsten Lutz in the Theory of Artificial Intelligence group at the University of Bremen and with Clemens Kupke in the MSP group at the University of Strathclyde in Glasgow.

I completed my dissertation under the supervision Martin Stokhof and Frank Veltman also at the ILLC. My PhD thesis is on representation theorems for possible world models of belief and meaning with respect to linguistic behavior.

Papers

On nonmonotonic and conditional logic:

Conditional Logic is Complete for Convexity in the Plane (draft).
A Discrete Duality Between Nonmonotonic Consequence Relations and Convex Geometries (preprint, doi),
with R. Pinosio, in Order, 2020.
A Game Semantics for System P (preprint, doi),
with R. Pinosio, in Studia Logica, 2016.
This extended version of the paper contains additional proofs.
Similarity Orders from Causal Equations (preprint, doi),
with R. Pinosio, at JELIA 2014.
Topological Semantics for Conditionals (preprint),
with R. Pinosio, at LOGICA 2013.

On description logic:

Query Expressibility and Verification in Ontology-Based Data Access (preprint, publisher, erratum),
with C. Lutz and L. Sabellek, at KR 2018.

On fixpoint logic:

Completeness for Game Logic (preprint),
with S. Enqvist, H. H. Hansen, C. Kupke and Y. Venema, at LICS 2019.
Parity Games and Automata for Game Logic (preprint, doi),
with H. H. Hansen, C. Kupke and Y. Venema, at DALI 2017.
This extended version includes all the proofs.

On coalgebraic modal logic, partially based on my MSc thesis:

Uniform Interpolation for Coalgebraic Fixpoint Logic (preprint, doi),
with F. Seifan and Y. Venema, at CALCO 2015.
Lax Extensions of Coalgebra Functors and Their Logic (preprint, doi),
with Y. Venema, in the Journal of Computer and System Sciences, 2015.
This paper is an extended version of the earlier:
Lax Extensions of Coalgebra Functors (preprint, doi),
with Y. Venema, at CMCS 2012.

Talks

2020
26 Aug	Conditional logic is complete for convexity in the plane, Advances in Modal Logic 2020, online.
01 Apr	Unification in coalgebraic modal logics, Algebra\|Coalgebra Seminar, ILLC, University of Amsterdam.
20 Feb	Unification in coalgebraic modal logics, Bern Logic Seminar, University of Bern.
2019
20 Nov	Size matters in the modal mu-calculus, Circularity in Syntax and Semantics, Göteborg, Sweden.

all talks

Contact

E-mail: johannes.marti@gmail.com

Phone: +31 20 525 7173

Mailing Address:
FNWI, ILLC
Universiteit van Amsterdam
P.O. Box 94242
1090 GE Amsterdam

Visiting Address:
Room F2.16
Science Park 107
1098 XG Amsterdam