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Propositional logic | first order predicate logic | Propositional calculus | gate | net - part 1
Propositional logic | first order predicate logic | Propositional calculus | gate | net - part 1
Published: 2016/11/28
Channel: KNOWLEDGE GATE
The Wav - Proposition (Official Song)
The Wav - Proposition (Official Song)
Published: 2017/02/15
Channel: HottyTracks
Propositions
Propositions
Published: 2013/11/13
Channel: Justin Harrison
'' the proposition '' - official film trailer - 2005.
Published: 2015/07/26
Channel: neondreams 25
2.1.1 - Propositions
2.1.1 - Propositions
Published: 2013/01/31
Channel: Ant0nMath
حروف الجر في اللغه الانجليزيه ( in , on , at , by )
حروف الجر في اللغه الانجليزيه ( in , on , at , by )
Published: 2016/09/23
Channel: دروس أونلاين
Proposition Meaning
Proposition Meaning
Published: 2015/04/18
Channel: SDictionary
GLXY - Proposition (ft. James Robb)
GLXY - Proposition (ft. James Robb)
Published: 2017/06/16
Channel: UKF Drum & Bass
Leçon_15 - Les propositions principales et subordonnées
Leçon_15 - Les propositions principales et subordonnées
Published: 2013/03/04
Channel: lamachineaecrire
The Proposition
The Proposition
Published: 2010/09/05
Channel: ThisAcountsThatOne
Strategyzer
Strategyzer's Value Proposition Canvas Explained
Published: 2017/03/08
Channel: Strategyzer
Proposition et phrase (organisation de la phrase)
Proposition et phrase (organisation de la phrase)
Published: 2014/03/05
Channel: Maitre Jack
LA PROPOSITION (2009) (Bande-annonce VF)
LA PROPOSITION (2009) (Bande-annonce VF)
Published: 2010/01/29
Channel: DaDeF76
The Bar-Kays - Propositions (Funk)
The Bar-Kays - Propositions (Funk)
Published: 2011/11/06
Channel: mrchivo951
The Conditional Proposition
The Conditional Proposition
Published: 2013/12/18
Channel: Jason Pallett
The Proposition - Trailer
The Proposition - Trailer
Published: 2012/03/14
Channel: MillenniumVOD
SEM121 - Propositions
SEM121 - Propositions
Published: 2013/05/08
Channel: The Virtual Linguistics Campus
The Proposition   Tödliches Angebot
The Proposition Tödliches Angebot
Published: 2015/08/17
Channel: Marlyn Falcone
Harvard i-lab | Startup Secrets: Value Proposition
Harvard i-lab | Startup Secrets: Value Proposition
Published: 2014/02/01
Channel: Harvard Innovation Labs
The Proposition OST - The Proposition #1
The Proposition OST - The Proposition #1
Published: 2008/09/25
Channel: Nate Pester
Value Proposition Canvas Explained
Value Proposition Canvas Explained
Published: 2014/07/21
Channel: Strategyzer
The Proposition - The Rider Song (Soundtrack)
The Proposition - The Rider Song (Soundtrack)
Published: 2009/08/04
Channel: phox111
ا   يجب أن تعرف من ماذا تتكون الجملة   proposition indépendante درس مهم
ا يجب أن تعرف من ماذا تتكون الجملة proposition indépendante درس مهم
Published: 2016/12/10
Channel: Français avec Nabil
Les propositions subordonnées
Les propositions subordonnées
Published: 2015/09/17
Channel: Maxicours
The Value Proposition Canvas
The Value Proposition Canvas
Published: 2014/10/15
Channel: Thomas Blekman
Methods of Mayhem-  Proposition Fuck You
Methods of Mayhem- Proposition Fuck You
Published: 2008/08/28
Channel: PVTSolis
La proposition subordonnée relative
La proposition subordonnée relative
Published: 2014/03/11
Channel: Maitre Jack
"The Proposition" Creepypasta
"The Proposition" Creepypasta
Published: 2016/05/06
Channel: CreepsMcPasta
What is a Claim, Statement, or Proposition?
What is a Claim, Statement, or Proposition?
Published: 2013/01/29
Channel: Kevin deLaplante
Unique Selling Proposition(USP)_ANIMATION_PIS
Unique Selling Proposition(USP)_ANIMATION_PIS
Published: 2016/08/20
Channel: eDola Politeknik Malaysia
"The Proposition" by Ebenezer Crowley
"The Proposition" by Ebenezer Crowley
Published: 2014/08/02
Channel: MrCreepyPasta
La proposition - Palmashow
La proposition - Palmashow
Published: 2016/10/21
Channel: Palmashow
GLXY - Proposition (feat. James Robb)
GLXY - Proposition (feat. James Robb)
Published: 2017/06/16
Channel: Geo DnB
The Dark Knight (clip5) -"Let
The Dark Knight (clip5) -"Let's not blow this out of proposition"
Published: 2014/08/06
Channel: Bruce Huang
تعلم الفرنسية -Les pronoms relatifs invariables- la proposition subordonnée relative-
تعلم الفرنسية -Les pronoms relatifs invariables- la proposition subordonnée relative-
Published: 2017/04/21
Channel: Français pour tous le monde الفرنسية للجميع
Cours de français sur la proposition subordonnée relative
Cours de français sur la proposition subordonnée relative
Published: 2014/11/02
Channel: digiSchool
Amazon
Amazon's Value Proposition: Never Run Out Of Toilet Paper!
Published: 2015/04/02
Channel: Strategyzer
What is a Value Proposition?
What is a Value Proposition?
Published: 2009/03/08
Channel: product180dotcom
Value Proposition - How to Build a Startup
Value Proposition - How to Build a Startup
Published: 2015/02/23
Channel: Udacity
ISIS Debate | Edward Grigg | Proposition
ISIS Debate | Edward Grigg | Proposition
Published: 2016/03/16
Channel: OxfordUnion
Marketing: Positioning, Differentiation, and Value Proposition
Marketing: Positioning, Differentiation, and Value Proposition
Published: 2013/01/13
Channel: Brian K. McCarthy
Atomic and compound Proposition logic | Propositional logic | gate | net - part 2
Atomic and compound Proposition logic | Propositional logic | gate | net - part 2
Published: 2017/03/22
Channel: KNOWLEDGE GATE
Lecture 2 : Discrete Mathematics Proposition, Propositional Logic and Negation in Hindi Urdu
Lecture 2 : Discrete Mathematics Proposition, Propositional Logic and Negation in Hindi Urdu
Published: 2017/05/25
Channel: Programology
Phrase complexe : La subordination - La Proposition subordonnée complétive
Phrase complexe : La subordination - La Proposition subordonnée complétive
Published: 2015/03/23
Channel: Interclasse - Mes cours de français en ligne
The proposal - La proposition (Sandra Bullock)
The proposal - La proposition (Sandra Bullock)
Published: 2010/07/08
Channel: DMOBM
Grammaire 07 proposition relative
Grammaire 07 proposition relative
Published: 2015/01/01
Channel: JEAN-FRANCOIS BRUN
Creating a Strong Value Proposition
Creating a Strong Value Proposition
Published: 2014/03/20
Channel: DuaneTCashin
Alexander Osterwalder: Mapping Customer Pains to Value Proposition
Alexander Osterwalder: Mapping Customer Pains to Value Proposition
Published: 2012/02/07
Channel: Stanford eCorner
duran duran proposition
duran duran proposition
Published: 2009/03/19
Channel: 203361
"The Proposition" - Candy Man #11 (ASMR)
"The Proposition" - Candy Man #11 (ASMR)
Published: 2017/08/29
Channel: Ephemeral Rift
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WIKIPEDIA ARTICLE

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The term proposition has a broad use in contemporary analytic philosophy. It is used to refer to some or all of the following: the primary bearers of truth-value, the objects of belief and other "propositional attitudes" (i.e., what is believed, doubted, etc.), the referents of that-clauses, and the meanings of declarative sentences. Propositions are the sharable objects of attitudes and the primary bearers of truth and falsity. This stipulation rules out certain candidates for propositions, including thought- and utterance-tokens which are not sharable, and concrete events or facts, which cannot be false.[1]

Historical usage[edit]

By Aristotle[edit]

Aristotelian logic identifies a proposition as a sentence which affirms or denies a predicate of a subject with the help of a 'Copula'. An Aristotelian proposition may take the form "All men are mortal" or "Socrates is a man." In the first example the subject is "men", predicate is "mortal" and copula is "are". In the second example the subject is "Socrates", the predicate is "a man" and copula is "is".[citation needed]

By the logical positivists[edit]

Often propositions are related to closed sentences to distinguish them from what is expressed by an open sentence. In this sense, propositions are "statements" that are truth-bearers. This conception of a proposition was supported by the philosophical school of logical positivism.

Some philosophers argue that some (or all) kinds of speech or actions besides the declarative ones also have propositional content. For example, yes–no questions present propositions, being inquiries into the truth value of them. On the other hand, some signs can be declarative assertions of propositions without forming a sentence nor even being linguistic, e.g. traffic signs convey definite meaning which is either true or false.

Propositions are also spoken of as the content of beliefs and similar intentional attitudes such as desires, preferences, and hopes. For example, "I desire that I have a new car," or "I wonder whether it will snow" (or, whether it is the case that "it will snow"). Desire, belief, and so on, are thus called propositional attitudes when they take this sort of content.[citation needed]

By Russell[edit]

Bertrand Russell held that propositions were structured entities with objects and properties as constituents. One important difference between Ludwig Wittgenstein's view (according to which a proposition is the set of possible worlds/states of affairs in which it is true) is that on the Russellian account, two propositions that are true in all the same states of affairs can still be differentiated. For instance, the proposition that two plus two equals four is distinct on a Russellian account from three plus three equals six. If propositions are sets of possible worlds, however, then all mathematical truths (and all other necessary truths) are the same set (the set of all possible worlds).[citation needed]

Relation to the mind[edit]

In relation to the mind, propositions are discussed primarily as they fit into propositional attitudes. Propositional attitudes are simply attitudes characteristic of folk psychology (belief, desire, etc.) that one can take toward a proposition (e.g. 'it is raining,' 'snow is white,' etc.). In English, propositions usually follow folk psychological attitudes by a "that clause" (e.g. "Jane believes that it is raining"). In philosophy of mind and psychology, mental states are often taken to primarily consist in propositional attitudes. The propositions are usually said to be the "mental content" of the attitude. For example, if Jane has a mental state of believing that it is raining, her mental content is the proposition 'it is raining.' Furthermore, since such mental states are about something (namely propositions), they are said to be intentional mental states. Philosophical debates surrounding propositions as they relate to propositional attitudes have also recently centered on whether they are internal or external to the agent or whether they are mind-dependent or mind-independent entities (see the entry on internalism and externalism in philosophy of mind).

Treatment in logic[edit]

As noted above, in Aristotelian logic a proposition is a particular kind of sentence, one which affirms or denies a predicate of a subject with the help of a copula. Aristotelian propositions take forms like "All men are mortal" and "Socrates is a man."

Propositions show up in modern formal logic as objects of a formal language. A formal language begins with different types of symbols. These types can include variables, operators, function symbols, predicate (or relation) symbols, quantifiers, and propositional constants. (Grouping symbols are often added for convenience in using the language but do not play a logical role.) Symbols are concatenated together according to recursive rules in order to construct strings to which truth-values will be assigned. The rules specify how the operators, function and predicate symbols, and quantifiers are to be concatenated with other strings. A proposition is then a string with a specific form. The form that a proposition takes depends on the type of logic.

The type of logic called propositional, sentential, or statement logic includes only operators and propositional constants as symbols in its language. The propositions in this language are propositional constants, which are considered atomic propositions, and composite propositions, which are composed by recursively applying operators to propositions. Application here is simply a short way of saying that the corresponding concatenation rule has been applied.

The types of logics called predicate, quantificational, or n-order logic include variables, operators, predicate and function symbols, and quantifiers as symbols in their languages. The propositions in these logics are more complex. First, terms must be defined. A term is (i) a variable or (ii) a function symbol applied to the number of terms required by the function symbol's arity. For example, if + is a binary function symbol and x, y, and z are variables, then x+(y+z) is a term, which might be written with the symbols in various orders. A proposition is (i) a predicate symbol applied to the number of terms required by its arity, (ii) an operator applied to the number of propositions required by its arity, or (iii) a quantifier applied to a proposition. For example, if = is a binary predicate symbol and is a quantifier, then ∀x,y,z [(x = y) → (x+z = y+z)] is a proposition. This more complex structure of propositions allows these logics to make finer distinctions between inferences, i.e., to have greater expressive power.

In this context, propositions are also called sentences, statements, statement forms, formulas, and well-formed formulas, though these terms are usually not synonymous within a single text. This definition treats propositions as syntactic objects, as opposed to semantic or mental objects. That is, propositions in this sense are meaningless, formal, abstract objects. They are assigned meaning and truth-values by mappings called interpretations and valuations, respectively.

Propositions are called structured propositions if they have constituents, in some broad sense.[2][3]

Assuming a structured view of propositions, we can distinguish between singular propositions (also Russellian propositions, named after Bertrand Russell) which are about a particular individual, general propositions, which are not about any particular individual, and particularized propositions, which are about a particular individual but do not contain that individual as a constituent.[4]

Objections to propositions[edit]

Attempts to provide a workable definition of proposition include

Two meaningful declarative sentences express the same proposition if and only if they mean the same thing.[citation needed]

thus defining proposition in terms of synonymity. For example, "Snow is white" (in English) and "Schnee ist weiß" (in German) are different sentences, but they say the same thing, so they express the same proposition.

Two meaningful declarative sentence-tokens express the same proposition if and only if they mean the same thing.[citation needed]

Unfortunately, the above definitions have the result that two sentences/sentence-tokens which have the same meaning and thus express the same proposition could have different truth-values, e.g. "I am Spartacus" said by Spartacus and said by John Smith; and e.g. "It is Wednesday" said on a Wednesday and on a Thursday.

A number of philosophers and linguists claim that all definitions of a proposition are too vague to be useful. For them, it is just a misleading concept that should be removed from philosophy and semantics. W.V. Quine maintained that the indeterminacy of translation prevented any meaningful discussion of propositions, and that they should be discarded in favor of sentences.[5] Strawson advocated the use of the term "statement".

See also[edit]

References[edit]

  1. ^ "Propositions (Stanford Encyclopedia of Philosophy)". Plato.stanford.edu. Retrieved 2014-06-23. 
  2. ^ Propositions by Matthew McGrath
  3. ^ Singular Propositions by Greg Fitch
  4. ^ Structured Propositions by Jeffrey C. King
  5. ^ Quine, W. V. (1970). Philosophy of Logic. NJ USA: Prentice-Hall. pp. 1–14. ISBN 0-13-663625-X. 

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