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  2. Venn diagram - Wikipedia

    en.wikipedia.org/wiki/Venn_diagram

    A Venn diagram, also called a set diagram or logic diagram, shows all possible logical relations between a finite collection of different sets. These diagrams depict elements as points in the plane, and sets as regions inside closed curves. A Venn diagram consists of multiple overlapping closed curves, usually circles, each representing a set.

  3. Logical conjunction - Wikipedia

    en.wikipedia.org/wiki/Logical_conjunction

    Venn diagram of . In logic, mathematics and linguistics, and is the truth-functional operator of conjunction or logical conjunction.The logical connective of this operator is typically represented as [1] or & or (prefix) or or [2] in which is the most modern and widely used.

  4. Exclusive or - Wikipedia

    en.wikipedia.org/wiki/Exclusive_or

    Venn diagram of . Exclusive or, exclusive disjunction, exclusive alternation, logical non-equivalence, or logical inequality is a logical operator whose negation is the logical biconditional.

  5. Set theory - Wikipedia

    en.wikipedia.org/wiki/Set_theory

    The math syllabus in European schools followed this trend, and currently includes the subject at different levels in all grades. Venn diagrams are widely employed to explain basic set-theoretic relationships to primary school students (even though John Venn originally devised them as part of a procedure to assess the validity of inferences in ...

  6. List of set identities and relations - Wikipedia

    en.wikipedia.org/wiki/List_of_set_identities_and...

    To investigate the left distributivity of set subtraction over unions or intersections, consider how the sets involved in (both of) De Morgan's laws are all related: () = = () always holds (the equalities on the left and right are De Morgan's laws) but equality is not guaranteed in general (that is, the containment might be strict).

  7. Boolean algebra - Wikipedia

    en.wikipedia.org/wiki/Boolean_algebra

    The three Venn diagrams in the figure below represent respectively conjunction x ∧ y, disjunction x ∨ y, and complement ¬x. Figure 2. Venn diagrams for conjunction, disjunction, and complement. For conjunction, the region inside both circles is shaded to indicate that x ∧ y is 1 when both variables are 1.

  8. Logical disjunction - Wikipedia

    en.wikipedia.org/wiki/Logical_disjunction

    Venn diagram of In logic , disjunction , also known as logical disjunction or logical or or logical addition or inclusive disjunction , is a logical connective typically notated as ∨ {\displaystyle \lor } and read aloud as "or".

  9. Square of opposition - Wikipedia

    en.wikipedia.org/wiki/Square_of_opposition

    This decision made Venn diagrams particularly easy to use for term logic. The square of opposition, under this Boolean set of assumptions, is often called the modern Square of opposition . In the modern square of opposition, A and O claims are contradictories, as are E and I , but all other forms of opposition cease to hold; there are no ...

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