universal existential

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• Existential therapy — Existential psychotherapy is partly based on the existential belief that human beings are alone in the world. fact|date=September 2008 This aloneness leads to feelings of meaninglessness which can be overcome only by creating one s own values and …   Wikipedia

• Universal algebra — (sometimes called general algebra) is the field of mathematics that studies algebraic structures themselves, not examples ( models ) of algebraic structures.For instance, rather than take particular groups as the object of study, in universal… …   Wikipedia

• Universal quantification — In predicate logic, universal quantification is an attempt to formalize the notion that something (a logical predicate) is true for everything , or every relevant thing.The resulting statement is a universally quantified statement, and we have… …   Wikipedia

• Existential quantification — In predicate logic, an existential quantification is the predication [The term predication in grammar means the predicate of a sentence which refers to subject and is an adverb or adjective, or equivalent, that describes an attribute of the… …   Wikipedia

• Existential fallacy — The existential fallacy, or existential instantiation, is a logical fallacy committed in a categorical syllogism that is invalid because it has two universal premises and a particular conclusion. In other words, for the conclusion to be true, at… …   Wikipedia

• Existential forgery — In a digital signature or Message Authentication Code (MAC) system, an existential forgery is the creation (by an adversary) of any message m and a valid signature (or MAC) sigma for m, where m has not been signed or MACed in the past by the… …   Wikipedia

• existential import — The implications of a proposition as to what exists. If a proposition entails the existence of something, then it has existential import. It should be noticed that in the predicate calculus the universal quantification (∀x )(F x → G x ) has no… …   Philosophy dictionary

• existential quantifier — Logic. a quantifier indicating that the sentential function within its scope is true for at least one value of the variable included in the quantifier. Also called particular quantifier. Cf. universal quantifier. [1935 40] * * * …   Universalium

• universal quantifier — Logic. a quantifier indicating that the sentential function within its scope is true for all values of any variable included in the quantifier. Cf. existential quantifier. * * * …   Universalium

• existential quantifier — noun The operator, represented by the symbol ∃, used in predicate calculus to indicate that a predicate is true for at least one member of a specified set. Some verbal equivalents are there exists or there is . See Also: universal quantifier …   Wiktionary

• SQ universal group — In mathematics, in the realm of group theory, a countable group is said to be SQ universal if every countable group can be embedded in one of its quotient groups. SQ universality can be thought of as a measure of largeness or complexity of a… …   Wikipedia