## The Laws of Tautology (MA176E)

- Details
- Published: Tuesday, 26 April 2016 00:00
- Written by Newton C. Braga

Repetition by addition or multiplication does not alter the truth value of an element. Figure below shows the circuit diagram correspondent to this lay:

**Tautology: **

a + a = a

a x a = a

**Mathematic Notation (Set Theory): **

a ∩ a = a

a ∪ a = a

**Logic Notation: **

a ∧ a = a

a ∨ a = a