Posted by **Christian** on Monday, January 14, 2008 at 6:36pm.

I have two words I need to know the definition of that are not in my book: disjunction and conjunction. Does anyone know the definitions?

- Algebra 2 -
**Damon**, Monday, January 14, 2008 at 7:31pm
That is mathematical logic talk

conjunction is logical "and"

disjunction is logical "or"

"and" is unambiguous English and

[ intersection of sets ]

"or" means either, or both

For example if I say A or B is true, then only A could be true or only B could be true or both could be true.

[ union of sets]

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