{"id":6136,"global_id":"www.st-andrews.ac.uk\/philevents?id=6136","global_id_lineage":["www.st-andrews.ac.uk\/philevents?id=6136","www.st-andrews.ac.uk\/arche?id=6191"],"author":"1","status":"publish","date":"2020-08-19 12:31:44","date_utc":"2020-08-19 11:31:44","modified":"2021-06-07 14:19:00","modified_utc":"2021-06-07 13:19:00","url":"https:\/\/www.st-andrews.ac.uk\/philevents\/event\/metaphysics-and-logic-seminar-tba-24\/","rest_url":"https:\/\/www.st-andrews.ac.uk\/philevents\/wp-json\/tribe\/events\/v1\/events\/6136","title":"Metaphysics and Logic Seminar Thomas Randriamahazaka (University of St. Andrews)","description":"<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>","excerpt":"","slug":"metaphysics-and-logic-seminar-tba-24","image":false,"all_day":false,"start_date":"2021-06-07 15:00:00","start_date_details":{"year":"2021","month":"06","day":"07","hour":"15","minutes":"00","seconds":"00"},"end_date":"2021-06-07 17:00:00","end_date_details":{"year":"2021","month":"06","day":"07","hour":"17","minutes":"00","seconds":"00"},"utc_start_date":"2021-06-07 14:00:00","utc_start_date_details":{"year":"2021","month":"06","day":"07","hour":"14","minutes":"00","seconds":"00"},"utc_end_date":"2021-06-07 16:00:00","utc_end_date_details":{"year":"2021","month":"06","day":"07","hour":"16","minutes":"00","seconds":"00"},"timezone":"Europe\/London","timezone_abbr":"BST","cost":"","cost_details":{"currency_symbol":"","currency_code":"","currency_position":"prefix","values":[]},"website":"https:\/\/www.st-andrews.ac.uk\/arche\/event\/metaphysics-and-logic-seminar-tba-2021-06-07\/","show_map":false,"show_map_link":false,"hide_from_listings":false,"sticky":false,"featured":false,"categories":[{"name":"Metaphysics and Logic group","slug":"metaphysics-and-logic-group","term_group":0,"term_taxonomy_id":25,"taxonomy":"tribe_events_cat","description":"","parent":0,"count":194,"filter":"raw","id":25,"urls":{"self":"https:\/\/www.st-andrews.ac.uk\/philevents\/wp-json\/tribe\/events\/v1\/categories\/25","collection":"https:\/\/www.st-andrews.ac.uk\/philevents\/wp-json\/tribe\/events\/v1\/categories"}}],"tags":[],"venue":{"id":19,"author":"1","status":"publish","date":"2020-01-29 15:33:14","date_utc":"2020-01-29 15:33:14","modified":"2026-06-11 22:08:09","modified_utc":"2026-06-11 21:08:09","url":"https:\/\/www.st-andrews.ac.uk\/philevents\/venue\/edgecliffe-g03\/","venue":"A virtual seminar by Zoom","slug":"edgecliffe-g03","address":"The University","city":"58³Ô¹Ï","country":"United Kingdom","zip":"KY16 9L","website":"https:\/\/www.st-andrews.ac.uk\/arche\/venue\/edgecliffe-g03-2\/","json_ld":{"@type":"Place","name":"A virtual seminar by Zoom","description":"","url":"https:\/\/www.st-andrews.ac.uk\/philevents\/venue\/edgecliffe-g03\/","address":{"@type":"PostalAddress","streetAddress":"The University","addressLocality":"58³Ô¹Ï","postalCode":"KY16 9L","addressCountry":"United Kingdom"},"telephone":"","sameAs":"https:\/\/www.st-andrews.ac.uk\/arche\/venue\/edgecliffe-g03-2\/"},"show_map":true,"show_map_link":true,"global_id":"www.st-andrews.ac.uk\/philevents?id=19","global_id_lineage":["www.st-andrews.ac.uk\/philevents?id=19","www.st-andrews.ac.uk\/arche?id=4853"]},"organizer":[],"custom_fields":[],"json_ld":{"@context":"http:\/\/schema.org","@type":"Event","name":"Metaphysics and Logic Seminar Thomas Randriamahazaka (University of St. Andrews)","description":"&lt;p&gt;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;&lt;\/p&gt;\\n","url":"https:\/\/www.st-andrews.ac.uk\/philevents\/event\/metaphysics-and-logic-seminar-tba-24\/","eventAttendanceMode":"https:\/\/schema.org\/OfflineEventAttendanceMode","eventStatus":"https:\/\/schema.org\/EventScheduled","startDate":"2021-06-07T15:00:00+01:00","endDate":"2021-06-07T17:00:00+01:00","location":{"@type":"Place","name":"A virtual seminar by Zoom","description":"","url":"https:\/\/www.st-andrews.ac.uk\/philevents\/venue\/edgecliffe-g03\/","address":{"@type":"PostalAddress","streetAddress":"The University","addressLocality":"58³Ô¹Ï","postalCode":"KY16 9L","addressCountry":"United Kingdom"},"telephone":"","sameAs":"https:\/\/www.st-andrews.ac.uk\/arche\/venue\/edgecliffe-g03-2\/"},"performer":"Organization"},"is_virtual":false,"virtual_url":null,"virtual_video_source":""}