GATE (Graduate Aptitude Test in Engineering) Computer Science & IT (CS) Mathematical Logic-Propositional Logic Study Material (Page 2 of 17)

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Logical Connectives

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  • We will now see the different Logical symbols or connectives which are commonly used to express logical representation.
    1. AND – The expression is true only when both p and q are true; else it is false. This connective is also called “Disjunction” .
    2. OR – The expression

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Combining Propositions

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Combining Propositions

  • When all of the propositional variables in a logical expression are assigned truth values, the expression itself acquires a truth value. We can then evaluate a logical expression just as we would an arithmetic expression or a relational expression. The concept can be understood by the usage of a “tree” like expression. Wh…

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