logical disjunction
論理和
OR
Affirming a disjunct
Bitwise OR
Boolean algebra (logic)
Boolean algebra topics
Boolean domain
Boolean function
Boolean-valued function
Disjunctive syllogism
Disjunction elimination
Disjunction introduction
First-order logic
Fréchet inequalities
Free choice inference
Hurford disjunction
Logical graph
Logical value
Operation
Operator (programming)
OR gate
Propositional calculus
Simplification of disjunctive antecedents
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define logical disjunction
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jisho logical disjunction