My Math Forum Struggling with simplifying Boolean expression

 Algebra Pre-Algebra and Basic Algebra Math Forum

 June 12th, 2019, 09:17 AM #1 Newbie   Joined: Jun 2019 From: london Posts: 2 Thanks: 0 Struggling with simplifying Boolean expression A!B!CD! + A!BCD + AB!C!D + AB!CD + ABC!D! Can anyone help me? Thank you
 June 12th, 2019, 11:08 AM #2 Senior Member     Joined: Sep 2015 From: USA Posts: 2,529 Thanks: 1389 are you writing, for example, "NOT A" as A! ? standard notation is !A
June 12th, 2019, 12:17 PM   #3
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Math Focus: Yet to find out.
Quote:
 Originally Posted by romsek standard notation is !A
Really? I thought $\bar{A}$ is more common outside of $\neg$

 June 12th, 2019, 12:59 PM #4 Member     Joined: Oct 2018 From: USA Posts: 88 Thanks: 61 Math Focus: Algebraic Geometry I've even seen ~$A$.
 June 12th, 2019, 09:41 PM #5 Senior Member   Joined: Feb 2016 From: Australia Posts: 1,834 Thanks: 649 Math Focus: Yet to find out. Yeah.. it’s unimportant, was just dredging up memories from my embedded micro controllers class.
June 13th, 2019, 04:24 AM   #6
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Quote:
 Originally Posted by Joppy Really? I thought $\bar{A}$ is more common outside of $\neg$
I meant w/regard as to which side of the variable the negation symbol falls.

Yes I've seen $\neg$ and ~ used as well but always on the left side of the variable.

 June 21st, 2019, 04:09 AM #7 Newbie   Joined: Jun 2019 From: london Posts: 2 Thanks: 0 A! is NOT A. My notation isn’t great haha Can anyone help me simplify the expression at all

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