Boolean Algebra | Mathematics | Page 1

candid plinthBOT Oct 9, 2023, 9:40 PM

#

shadow prawn Oct 9, 2023, 11:13 PM

#

"when the expression is a tautology"
That's not what tautology means.

#

Anyway, can you tell me how you got from your first line to the second? Why are those the same?

shadow prawn Oct 10, 2023, 5:58 PM

#

A tautology is a statement that is always true.

#

Are you saying that the original statement is a tautology?

#

Note that A or B or C is not a tautology.

lunar scaffold Oct 10, 2023, 6:12 PM

#

You can’t absorb the two propositions because P or Q doesn’t imply P.

#

Which also means that P or notP doesn’t imply P

cloud oriole Oct 10, 2023, 6:14 PM

#

(¬A ∧ B) ∨ (A ∧ B) simplifies to B

#

and (C ∧ ¬B) ∨ (¬B ∧ ¬C) to ¬B

#Boolean Algebra