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oai:recercat.cat:2445/2197032025-11-20T10:17:39Zcom_2072_1057col_2072_478820col_2072_478917

A hyperintensional approach to positive epistemic possibility Rossi, Niccolò Ogun, Aybuke Modalitat (Lògica) Possibilitat Semàntica (Filosofia) Modality (Logic) Possibility Semantics (Philosophy) The received view says that possibility is the dual of necessity: a proposition is (meta- physically, logically, epistemically etc.) possible iff it is not the case that its negation is (metaphysically, logically, epistemically etc., respectively) necessary. This reading is usually taken for granted by modal logicians and indeed seems plausible when dealing with logical or metaphysical possibility. But what about epistemic possibil- ity? We argue that the dual definition of epistemic possibility in terms of epistemic necessity generates tension when reasoning about non-idealized agents and is a prob- lem of concern for most hyperintensional epistemic logics that alleviate the problem of logical omniscience. The tension is particularly evident when knowledge is taken as a primitive to define other epistemic concepts, such as justification and belief, as done in the knowledge-first tradition. We propose a non-dual interpretation of epis- temic possibility, employing a hyperintensionality filter similar to the one that makes the corresponding epistemic necessity operator hyperintensional. We employ the pro- posed semantics to model Stalnaker’s belief as epistemic possibility of knowledge and provide a sound and complete axiomatization for a hyperintensional version of his bimodal logic of knowledge and belief 2025-03-13T20:34:16Z 2025-03-13T20:34:16Z 2023-07-26 2025-03-13T20:34:16Z info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion 0039-7857 https://hdl.handle.net/2445/219703 eng  Reproducció del document publicat a: https://doi.org/10.1007/s11229-023-04219-x Synthese, 2023, vol. 202 https://doi.org/10.1007/s11229-023-04219-x cc-by (c) Rossi, Niccolò et al., 2023 http://creativecommons.org/licenses/by/3.0/es/ info:eu-repo/semantics/openAccess 29 p. application/pdf application/pdf Springer Verlag Articles publicats en revistes (Filosofia)