{"id":6136,"date":"2020-08-19T12:31:44","date_gmt":"2020-08-19T11:31:44","guid":{"rendered":"https:\/\/www.st-andrews.ac.uk\/philevents\/event\/metaphysics-and-logic-seminar-tba-24\/"},"modified":"2021-06-07T14:19:00","modified_gmt":"2021-06-07T13:19:00","slug":"metaphysics-and-logic-seminar-tba-24","status":"publish","type":"tribe_events","link":"https:\/\/www.st-andrews.ac.uk\/philevents\/event\/metaphysics-and-logic-seminar-tba-24\/","title":{"rendered":"Metaphysics and Logic Seminar Thomas Randriamahazaka (University of St. Andrews)"},"content":{"rendered":"<div>Title: Truthmaker semantics for containment and nonsense<\/div>\n<div><\/div>\n<div>Abstract: Conceptivism is the doctrine according to which a proposition cannot entail another proposition if the latter contains a concept which is not already contained in the former: entailment does not introduce any additional conceptual content. This doctrine motivates so-called containment logics, namely logics where a formula B cannot be deduced from a formula A if B contains a propositional variable which is not already contained in A. Interestingly, most containment logics can be described as the result of filtering another logic by this syntactic condition. For instance, A follows from B in Parry\u2019s logic PAI if and only if A classically follows from B and all the propositional variables of B occur in A. Routley uses this fact to discredit containment logics as syntactic artefacts lacking any semantic depth. In this talk, I investigate the semantic properties of containment logics to rebut Routley\u2019s critique. I look at two recent strategies to semantically characterise containment logics without syntactic filters: Berto (2019)\u2019s two-component semantics, where entailment contains a condition of topical inclusion, and logics of nonsense (e.g., Ferguson (2015)), which include a truth-value representing meaninglessness. Both are somewhat unsatisfactory and call for a more general approach. I argue that the framework of truthmaker semantics (e.g., Fine (2017)) can be used to that end. I develop sound and complete truthmaker semantics for logics of nonsense and adapt them to model containment logics. The truthmaker understanding of containment logics provides a purely semantic foundation for them, thus refuting Routley\u2019s claim that they are syntactic artefacts.<\/div>\n","protected":false},"excerpt":{"rendered":"<p>Title: Truthmaker semantics for containment and nonsense Abstract: Conceptivism is the doctrine according to which a proposition cannot entail another proposition if the latter contains a concept which is not&hellip;<\/p>\n","protected":false},"author":1,"featured_media":0,"template":"","meta":{"_tribe_events_status":"","_tribe_events_status_reason":"","_tribe_events_is_hybrid":"","_tribe_events_is_virtual":"","_tribe_events_virtual_video_source":"","_tribe_events_virtual_embed_video":"","_tribe_events_virtual_linked_button_text":"","_tribe_events_virtual_linked_button":"","_tribe_events_virtual_show_embed_at":"","_tribe_events_virtual_show_embed_to":[],"_tribe_events_virtual_show_on_event":"","_tribe_events_virtual_show_on_views":"","_tribe_events_virtual_url":"","footnotes":""},"tags":[],"tribe_events_cat":[25],"class_list":["post-6136","tribe_events","type-tribe_events","status-publish","hentry","tribe_events_cat-metaphysics-and-logic-group","cat_metaphysics-and-logic-group"],"_links":{"self":[{"href":"https:\/\/www.st-andrews.ac.uk\/philevents\/wp-json\/wp\/v2\/tribe_events\/6136","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.st-andrews.ac.uk\/philevents\/wp-json\/wp\/v2\/tribe_events"}],"about":[{"href":"https:\/\/www.st-andrews.ac.uk\/philevents\/wp-json\/wp\/v2\/types\/tribe_events"}],"author":[{"embeddable":true,"href":"https:\/\/www.st-andrews.ac.uk\/philevents\/wp-json\/wp\/v2\/users\/1"}],"version-history":[{"count":2,"href":"https:\/\/www.st-andrews.ac.uk\/philevents\/wp-json\/wp\/v2\/tribe_events\/6136\/revisions"}],"predecessor-version":[{"id":7416,"href":"https:\/\/www.st-andrews.ac.uk\/philevents\/wp-json\/wp\/v2\/tribe_events\/6136\/revisions\/7416"}],"wp:attachment":[{"href":"https:\/\/www.st-andrews.ac.uk\/philevents\/wp-json\/wp\/v2\/media?parent=6136"}],"wp:term":[{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.st-andrews.ac.uk\/philevents\/wp-json\/wp\/v2\/tags?post=6136"},{"taxonomy":"tribe_events_cat","embeddable":true,"href":"https:\/\/www.st-andrews.ac.uk\/philevents\/wp-json\/wp\/v2\/tribe_events_cat?post=6136"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}