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  2. List of rules of inference - Wikipedia

    en.wikipedia.org/wiki/List_of_rules_of_inference

    The column-11 operator (IF/THEN), shows Modus ponens rule: when p→q=T and p=T only one line of the truth table (the first) satisfies these two conditions. On this line, q is also true. Therefore, whenever p → q is true and p is true, q must also be true.

  3. Wikipedia : WikiProject Logic/Logical Operators

    en.wikipedia.org/wiki/Wikipedia:WikiProject...

    B) similar sections including truth table, venn diagram, properties (including theorems that demonstrate the properties), symbols (preferably from all the above disciplines). C) several merges including If and only if, logical biconditional, and logical equality; different pages for implication; logical NOR and NOR gate; others

  4. If and only if - Wikipedia

    en.wikipedia.org/wiki/If_and_only_if

    The biconditional is true in two cases, where either both statements are true or both are false. The connective is biconditional (a statement of material equivalence), [2] and can be likened to the standard material conditional ("only if", equal to "if ... then") combined with its reverse ("if"); hence the name. The result is that the truth of ...

  5. Logical biconditional - Wikipedia

    en.wikipedia.org/wiki/Logical_biconditional

    Venn diagram of (true part in red) In logic and mathematics, the logical biconditional, also known as material biconditional or equivalence or biimplication or bientailment, is the logical connective used to conjoin two statements and to form the statement "if and only if" (often abbreviated as "iff " [1]), where is known as the antecedent, and the consequent.

  6. Contraposition - Wikipedia

    en.wikipedia.org/wiki/Contraposition

    Download as PDF; Printable version ... the terms of the propositions on both sides of the biconditional ... by the use of the following truth table, ...

  7. Truth table - Wikipedia

    en.wikipedia.org/wiki/Truth_table

    A truth table is a structured representation that presents all possible combinations of truth values for the input variables of a Boolean function and their corresponding output values. A function f from A to F is a special relation , a subset of A×F, which simply means that f can be listed as a list of input-output pairs.

  8. Template:2-ary truth table/doc - Wikipedia

    en.wikipedia.org/wiki/Template:2-ary_truth_table/doc

    Print/export Download as PDF; Printable version; In other projects Appearance. ... This is a documentation subpage for Template:2-ary truth table.

  9. List of logic symbols - Wikipedia

    en.wikipedia.org/wiki/List_of_logic_symbols

    The following table lists many common symbols, together with their name, how they should be read out loud, and the related field of mathematics. Additionally, the subsequent columns contains an informal explanation, a short example, the Unicode location, the name for use in HTML documents, [ 1 ] and the LaTeX symbol.