Boolean algebra: Introduction

MultiplicationAdditionNegation
0 ∙ 0 = 0
0 ∙ 1 = 0
1 ∙ 0 = 0
1 ∙ 1 = 1
0 + 0 = 0
0 + 1 = 1
1 + 0 = 1
1 + 1 = 1
1 = 0
0 = 1
A ∙ 0 = 0
A ∙ 1 = A
A ∙ A = A
A ∙ A = 0
A + 0 = A
A + 1 = 1
A + A = A
A + A = 1
A = A

Next: Truth tables