Math Is Fun Forum
  Discussion about math, puzzles, games and fun.   Useful symbols: ÷ × ½ √ ∞ ≠ ≤ ≥ ≈ ⇒ ± ∈ Δ θ ∴ ∑ ∫ • π ƒ -¹ ² ³ °

Login

Username

Password

Not registered yet?

#1 2013-06-25 15:39:35

{7/3}
Full Member

Offline

Tautology and contradiction

I do not understand the concept of tautology and contradiction in logic,can anybody help?


There are 10 kinds of people in the world,people who understand binary and people who don't.

#2 2013-06-25 17:21:06

bob bundy
Moderator

Offline

Re: Tautology and contradiction


You cannot teach a man anything;  you can only help him find it within himself..........Galileo Galilei

#3 2013-06-25 21:01:34

{7/3}
Full Member

Offline

Re: Tautology and contradiction

Okay,what are their applications


There are 10 kinds of people in the world,people who understand binary and people who don't.

#4 2013-06-25 21:41:14

anonimnystefy
Real Member

Offline

Re: Tautology and contradiction

Well, contradiction is used for proving things in math. It's one of the major methods of proof besides the proof by induction.


The limit operator is just an excuse for doing something you know you can't.
“It's the subject that nobody knows anything about that we can all talk about!” ― Richard Feynman
“Taking a new step, uttering a new word, is what people fear most.” ― Fyodor Dostoyevsky, Crime and Punishment

#5 2013-06-25 23:43:55

{7/3}
Full Member

Offline

Re: Tautology and contradiction

Okay,what about tautology?and contradiction in proofs is only used in the form -p and (not p)


There are 10 kinds of people in the world,people who understand binary and people who don't.

Board footer

Powered by FluxBB