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  2. Logical consequence - Wikipedia

    en.wikipedia.org/wiki/Logical_consequence

    The Polish logician Alfred Tarski identified three features of an adequate characterization of entailment: (1) The logical consequence relation relies on the logical form of the sentences: (2) The relation is a priori, i.e., it can be determined with or without regard to empirical evidence (sense experience); and (3) The logical consequence ...

  3. Category:Logical consequence - Wikipedia

    en.wikipedia.org/wiki/Category:Logical_consequence

    Pages in category "Logical consequence" The following 23 pages are in this category, out of 23 total. This list may not reflect recent changes. ...

  4. Deductive reasoning - Wikipedia

    en.wikipedia.org/wiki/Deductive_reasoning

    The relation between the premises and the conclusion of a deductive argument is usually referred to as "logical consequence". According to Alfred Tarski, logical consequence has 3 essential features: it is necessary, formal, and knowable a priori.

  5. Material conditional - Wikipedia

    en.wikipedia.org/wiki/Material_conditional

    The material conditional (also known as material implication) is an operation commonly used in logic.When the conditional symbol is interpreted as material implication, a formula is true unless is true and is false.

  6. List of fallacies - Wikipedia

    en.wikipedia.org/wiki/List_of_fallacies

    The consequence of the phenomenon is claimed to be its root cause. Ignoring a common cause Fallacy of the single cause (causal oversimplification [ 60 ] ) – it is assumed that there is one, simple cause of an outcome when in reality it may have been caused by a number of only jointly sufficient causes.

  7. Rational consequence relation - Wikipedia

    en.wikipedia.org/wiki/Rational_consequence_relation

    A rational consequence relation is a logical framework that refines traditional deductive reasoning to better model real-world scenarios. It incorporates rules like reflexivity, left logical equivalence, right-hand weakening, cautious monotony, disjunction on the left-hand side, logical and on the right-hand side, and rational monotony. These ...

  8. List of logic symbols - Wikipedia

    en.wikipedia.org/wiki/List_of_logic_symbols

    In logic, a set of symbols is commonly used to express logical representation. The following table lists many common symbols, together with their name, how they should be read out loud, and the related field of mathematics.

  9. Tautological consequence - Wikipedia

    en.wikipedia.org/wiki/Tautological_consequence

    Tautological consequence can also be defined as ∧ ∧ ... ∧ → is a substitution instance of a tautology, with the same effect. [2]It follows from the definition that if a proposition p is a contradiction then p tautologically implies every proposition, because there is no truth valuation that causes p to be true and so the definition of tautological implication is trivially satisfied.