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

You are not logged in.

#1 2013-06-24 17:39:35

{7/3}
Member
Registered: 2013-02-11
Posts: 210

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.

Offline

#2 2013-06-24 19:21:06

bob bundy
Moderator
Registered: 2010-06-20
Posts: 6,531

Re: Tautology and contradiction


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

Offline

#3 2013-06-24 23:01:34

{7/3}
Member
Registered: 2013-02-11
Posts: 210

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.

Offline

#4 2013-06-24 23:41:14

anonimnystefy
Real Member
From: The Foundation
Registered: 2011-05-23
Posts: 15,657

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.


“Here lies the reader who will never open this book. He is forever dead.

“Taking a new step, uttering a new word, is what people fear most.” ― Fyodor Dostoyevsky, Crime and Punishment

Offline

#5 2013-06-25 01:43:55

{7/3}
Member
Registered: 2013-02-11
Posts: 210

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.

Offline

Board footer

Powered by FluxBB