"If… she… weighs… the same as a duck,… she’s made of wood."
(Monty Python on Natural Language Conditionals)


Ruhr University Bochum
Department of Philosophy I

Logic and Epistemology and Non-Classical Logic
Universitätsstraße 150
D-44801 Bochum

Room: GB 04/147
Phone: +49-234-32-22714
Email: daniel[dot]skurt[at] 







About me

  • Member of the employee theatre group at RUB
  • 2017, Dr. phil. in Logic, Ruhr University Bochum
  • 2012, M.A. in Logic, Leipzig University
  • 2007, Dipl.-Ing. in Electrical Engineering, TU Chemnitz




No teaching in the summer term 2021.

  Lecture Room/Time

Lecture Notes



  • Modal Semantics without Possible Worlds - Principle Investigator (DFG project SK 379/1-1)
  • Dialetheism and Paraconsistent Logics (Sofja Kovalevskaja Award Research Group)
  • FDE-based modal logics (DFG project WA 936/13-1) (finished)



  • Modal Extensions of Many-Valued Logics
  • Non-Deterministic Semantics for Modal Logics
  • Non-normal Modal Logics
  • Non-Deterministics Semantics





Journal Papers

  1. Sergey Drobyshevich, —. Neighbourhood semantics for FDE-based modal logics. Studia Logica, 2021. [pdf]
  2. Sergei Odintsov, —, Heinrich Wansing. On Definability of Connectives and Logics over FDE. Logic and Logical Philosophy, 28,(4): 631–659, 2019. [pdf]
  3. —. Bi-intuitionistic Implication Structures. Journal of Applied Non-Classical Logic, 28,(1): 20–34, 2018. [pdf]
  4. Heinrich Wansing, —. Negation as Cancellation, Connexive Logic, and qLPm. The Australasian Journal of Logic, 2,(15): 476–488, 2018. [pdf]
  5. —. FDE Circumscription. The Australasian Journal of Logic, 2,(14): 326–355, 2017. [pdf]
  6. —. A Note on Two’s Company: ”The Humbug of Many Logical Values”. Logica Universalis, 3,(11): 401–407, 2017. [pdf]
  7. Hitoshi Omori, —. More Modal Semantics without Possible Worlds. IfCoLog Journal of Logics and their Applications, 3,(5): 815–846, 2016. [pdf]

Book Chapters

  1. Sergei Odintsov, —, Heinrich Wansing. Connexive Variants of Modal Logics over FDE. In: O. Arieli and A. Zamansky (eds.), Outstanding Contributions to Logic volume for Arnon Avron. [preprint]
  2. Heinrich Wansing, —. On Non-transitive ’Identity’. In: C. Baskent and T.M. Ferguson (eds.), Graham Priest on Dialetheism and Paraconsistency, Springer, 535–553, 2020. [pdf]

Conference Proceedings

  1. Hitoshi Omori, —. Untruth, falsity and non-deterministic semantics. IEEE 51th International Symposium on Multiple-Valued Logic, Volume 51, 2021. [preprint]
  2. Hitoshi Omori, —. A Semantics for a Failed Axiomatization of K. Proceedings of AiML 2020. [pdf]
  3. Hitoshi Omori, —. Sixteen3 in Light of Routley Stars. In: Lecture Notes in Computer Science 11541, Logic, Language, Information and Computation, Springer, 516–532, WoLLIC 2019. [preprint]
  4. Heinrich Wansing, —. Logical Connectives for some FDE-based Modal Logics. Short Paper Submission AiML 2018.
  5. Hitoshi Omori, —. A survey on Kearns’ modal semantics without possible worlds. Short Paper Submission AiML 2016.

Books and Dissertation

  1. —. New Perspectives on Some Established Non-Classical Logical Systems. Dissertation, Ruhr University Bochum, University Library.