Peter Fritz

Professor - Philosophy

Norwegian version of this page

Email peter.fritz@ifikk.uio.no

Room 414 GM

Available hours Wednesdays 12:30-13:30

Username

Visiting address Blindernveien 31 Georg Morgenstiernes hus 0313 Oslo

Postal address Postboks 1020 Blindern 0315 Oslo

Download business card

Academic interests

I mainly work on logic and its philosophy, metaphysics, and the philosophy of language. I also have interests in the philosophy of mathematics and epistemology. Much of my work is on questions concerning modality and existence, and involves modal or higher-order logic.

How fine-grained is reality? is an accessible introduction to one of my research topics.

Higher education and employment history

2015-2017 University of Oslo, Postdoctoral Research Fellow in Philosophy
2011-2015 University of Oxford, DPhil in Philosophy
2009-2011 University of Amsterdam, MSc in Logic
2005-2009 University of Konstanz, BA in Philosophy

Teaching

FIL4400 Logic and philosophy of language
FIL2405/FIL4405 Philosophical logic and the philosophy of mathematics
FIL2506/FIL4630 Recent history of philosophy: The heritage of Frege and Russell
FIL2403 Philosophy of language
FIL1006 Introduction to logic
EXPHIL03E Examen philosophicum - English option

Tags: Philosophy, Philosophical Logic, Metaphysics, Philosophy of Language

Fritz, Peter (2021). Operands and Instances. The Review of Symbolic Logic. ISSN 1755-0203. p. 1–22. doi: 10.1017/S175502032100040X. Full text in Research Archive
Fritz, Peter (2021). Ground and Grain. Philosophy and Phenomenological Research. ISSN 0031-8205. p. 1–32. doi: 10.1111/phpr.12822. Full text in Research Archive
Fritz, Peter; Lederman, Harvey & Uzquiano, Gabriel (2021). Closed Structure. Journal of Philosophical Logic. ISSN 0022-3611. 50(6), p. 1249–1291. doi: 10.1007/s10992-021-09598-5. Full text in Research Archive
Fritz, Peter (2020). On Stalnaker’s Simple Theory of Propositions. Journal of Philosophical Logic. ISSN 0022-3611. 50(1), p. 1–31. doi: 10.1007/s10992-020-09557-6. Full text in Research Archive Show summary
Robert Stalnaker recently proposed a simple theory of propositions using the notion of a set of propositions being consistent, and conjectured that this theory is equivalent to the claim that propositions form a complete atomic Boolean algebra. This paper clarifies and confirms this conjecture. Stalnaker also noted that some of the principles of his theory may be given up, depending on the intended notion of proposition. This paper therefore also investigates weakened constraints on consistency and the corresponding classes of Boolean algebras.
Fritz, Peter (2019). On higher-order logical grounds. Analysis. ISSN 0003-2638. 80(4), p. 656–666. doi: 10.1093/analys/anz085. Full text in Research Archive Show summary
Existential claims are widely held to be grounded in their true instances. However, this principle is shown to be problematic by arguments due to Kit Fine. Stephan Kra ̈mer has given an especially simple form of such an argument using propositional quantifiers. This note shows that even if a schematic principle of existential grounds for propositional quantifiers has to be restricted, this does not immediately apply to a corresponding non- schematic principle in higher-order logic.
Fritz, Peter (2019). Structure by proxy, with an application to grounding. Synthese. ISSN 0039-7857. 198(7), p. 6045–6063. doi: 10.1007/s11229-019-02450-z. Full text in Research Archive
Fritz, Peter; Hawthorne, John & Juhani, Yli-Vakkuri (2018). Operator arguments revisited. Philosophical Studies. ISSN 0031-8116. 176(11), p. 2933–2959. doi: 10.1007/s11098-018-1158-8. Full text in Research Archive
Fritz, Peter (2018). Propositional Quantification in Bimodal S5. Erkenntnis: An International Journal of Scientific Philosophy. ISSN 0165-0106. 85(2), p. 455–465. doi: 10.1007/s10670-018-0035-3. Full text in Research Archive
Fritz, Peter; Lederman, Harvey; Liu, Tiankai & Scott, Dana (2017). Can Modalities Save Naive Set Theory? The Review of Symbolic Logic. ISSN 1755-0203. 11(1), p. 21–47. doi: 10.1017/S1755020317000168. Full text in Research Archive
Fritz, Peter & Goodman, Jeremy (2017). Counterfactuals and Propositional Contingentism. The Review of Symbolic Logic. ISSN 1755-0203. 10(3), p. 509–529. doi: 10.1017/S1755020317000144. Full text in Research Archive
Fritz, Peter (2017). Higher-Order Contingentism, Part 3: Expressive Limitations. Journal of Philosophical Logic. ISSN 0022-3611. 47(4), p. 649–671. doi: 10.1007/s10992-017-9443-0. Full text in Research Archive
Fritz, Peter (2017). Logics for propositional contingentism. The Review of Symbolic Logic. ISSN 1755-0203. 10(2), p. 203–236. doi: 10.1017/S1755020317000028. Full text in Research Archive
Fritz, Peter & Goodman, Jeremy (2017). Counting Incompossibles. Mind. ISSN 0026-4423. 126(504), p. 1063–1108. doi: 10.1093/mind/fzw026. Full text in Research Archive
Fritz, Peter (2017). Higher-order contingentism, part 2: patterns of indistinguishability. Journal of Philosophical Logic. ISSN 0022-3611. 47(3), p. 407–418. doi: 10.1007/s10992-017-9432-3. Full text in Research Archive
Fritz, Peter & Lederman, Harvey (2016). Standard state space models of unawareness (extended abstract). Electronic Proceedings in Theoretical Computer Science (EPTCS). ISSN 2075-2180. 215, p. 141–158. doi: 10.4204/EPTCS.215.11. Full text in Research Archive
Fritz, Peter (2016). Post Completeness in Congruential Modal Logics. In Beklemishev, Lev; Demri, Stéphane & Máté, András (Ed.), Advances in Modal Logic Volume 11. College Publications. ISSN 978-1-84890-201-5. p. 288–301. Full text in Research Archive
Fritz, Peter (2016). A Purely Recombinatorial Puzzle. Noûs. ISSN 0029-4624. 51(3), p. 547–564. doi: 10.1111/nous.12172. Full text in Research Archive
Fritz, Peter (2016). Appendix to Juhani Yli-Vakkuri’s ‘Epistemicism and Modality’. Canadian Journal of Philosophy. ISSN 0045-5091. 46(4-5), p. 836–838. doi: 10.1080/00455091.2016.1192447. Full text in Research Archive
Fritz, Peter (2016). First-order modal logic in the necessary framework of objects. Canadian Journal of Philosophy. ISSN 0045-5091. 46(4-5), p. 584–609. doi: 10.1080/00455091.2015.1132976. Full text in Research Archive
Fritz, Peter & Goodman, Jeremy (2016). Higher-Order Contingentism, Part 1: Closure and Generation. Journal of Philosophical Logic. ISSN 0022-3611. 45(6), p. 645–695. doi: 10.1007/s10992-015-9388-0. Full text in Research Archive
Fritz, Peter (2016). Propositional Contingentism. The Review of Symbolic Logic. ISSN 1755-0203. 9(1), p. 123–142. doi: 10.1017/S1755020315000325. Full text in Research Archive
Fritz, Peter (2014). What is the correct logic of necessity, actuality and apriority? The Review of Symbolic Logic. ISSN 1755-0203. 7(3), p. 385–414. doi: 10.1017/S1755020314000136.
Fritz, Peter (2013). Modal Ontology and Generalized Quantifiers. Journal of Philosophical Logic. ISSN 0022-3611. 42(4), p. 643–678. doi: 10.1007/s10992-012-9243-5.
Fritz, Peter (2013). A logic for epistemic two-dimensional semantics. Synthese. ISSN 0039-7857. 190(10), p. 1753–1770. doi: 10.1007/s11229-013-0260-x.

View all works in Cristin

Fritz, Peter (2017). The Boundary Stones of Thought: An Essay in the Philosophy of Logic, by Ian Rumfitt. Mind. ISSN 0026-4423. 127(505), p. 265–276. doi: 10.1093/mind/fzx016.
Fritz, Peter (2017). How Fine-Grained is Reality? Filosofisk supplement. ISSN 0809-8220. 13(2), p. 52–57.

View all works in Cristin

Published Aug. 25, 2015 1:47 PM - Last modified Jan. 16, 2021 4:42 AM

Research groups

Logic at the University of Oslo