slingshot

The argument sometimes known as the Frege–Church argument that if a context is such that co-referring singular terms (names or descriptions) can be substituted for each other salva veritate, then sentences with the same truth-value can also be so substituted. This justifies semantic theory in holding that the reference of a sentence is its truth-value rather than anything more ‘fine-grained’ such as a situation or state of affairs. The argument works by manufacturing a definite description from a sentence, and substituting a co-referring definite description with another sentence of the same truth-value in it. Suppose two propositions p, q with the same truth-value. Then from ‘ p ’ we derive ‘(the number x such that 2 x = 6 & p ) = 3’; substituting for the referring term in parentheses we have ‘(the number x such that 2 x = 6 & q ) = 3’ from which we derive q . The attribution to Frege, based on some remarks in ‘On Sense and Reference’, is doubtful.

Philosophy dictionary. . 2011.

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  • Slingshot! — Slingshots Accessories | EHS Slingshots http://www.slingshots.ws Exotic wood handmade hunting slingshots/catapults from Slingshots.ws EHS – Exotic Hunting Slingshots are made with exotic hardwoods such as cocobolo (dalbergia retusa), Mora… …   Wikipedia Español

  • Slingshot 57 — is a Christian rock band from Champaign Urbana, Illinois, USA, which formed in 1999. They have played 450 shows in 23 states. The name was inspired by the Biblical story of David and Goliath and Psalm 57. Contents 1 History 2 Members 3… …   Wikipedia

  • Slingshot! — (Рогатка)  это анархическая газета, публикующаясе в городе Беркли штат Калифорния с 1988 г. группой «Slingshot Collective» (Коллектив Слингшот). Данная газета  это некомерческий проект Инфошопа Лонг Хаул. Слингшот предлагает… …   Википедия

  • slingshot — 1849, from SLING (Cf. sling) (v.) + SHOT (Cf. shot) (n.). As a verb, from 1969. The piece of stone or metal hurled from it is a slung shot (1848) …   Etymology dictionary

  • slingshot — ► NOUN ▪ a hand held catapult …   English terms dictionary

  • slingshot — ☆ slingshot [sliŋ′shät΄ ] n. a Y shaped piece of wood, metal, etc. with an elastic band or bands attached to the upper tips for shooting stones, etc …   English World dictionary

  • Slingshot — A slingshot (also sometimes called a catapult, shanghai, or katty) is a small hand powered projectile weapon. The forked Y shaped frame has two rubber strips attached to the uprights, leading back to a pocket for holding the projectile. It is… …   Wikipedia

  • Slingshot! — Infobox Newspaper name = Slingshot! caption = type = Political philosophy format = Quarterly compact (tabloid) foundation = 1988 ceased publication = price = owners = Slingshot Collective publisher = editor = chiefeditor = assoceditor = staff =… …   Wikipedia

  • Slingshot — Der Begriff Slingshot (englisch „Steinschleuder“) bezeichnet eine Methode der interplanetaren Raumfahrt, bei der ein Raumflugkörper gezielt dicht an einem Planeten vorbeifliegt und durch dessen Gravitation sowohl die Richtung als auch die… …   Deutsch Wikipedia

  • slingshot — UK [ˈslɪŋˌʃɒt] / US [ˈslɪŋˌʃɑt] noun [countable] Word forms slingshot : singular slingshot plural slingshots mainly American a children s catapult for firing stones …   English dictionary

  • slingshot — /ˈslɪŋʃɒt / (say slingshot) noun 1. → catapult (def. 2). 2. → sling1 (def. 1). –verb (t) 3. to boost the acceleration of (a rocket) by means of the slingshot effect. {sling1 + shot1; US English (1840s) …   Australian English dictionary

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