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Ask HN:Transitivity property of real numbers

3 pointsby pencilover 14 years ago
Hello HN,<p>The transitivity property of real numbers says if a&#62;b,b&#62;c then a&#62;c.but when i test this property with real numbers it give's me false results.let a=1,b=2 and c=3 then the transitivity property says if 1&#62;2,2&#62;3 then 1&#62;3 which doesn't make any sense.i'll be glad if someone could comeout with a nice explanation.

3 comments

Klimentover 14 years ago
Well, it's very simple. The "if" is the key to it. IF 1 were greater than 2 AND 2 were greater then 3, THEN 1 would be greater than three. Since neither 1&#62;2 nor 2&#62;3 is true, 1&#62;3 is not required to be true by the transitivity property. If I am taller than you and you are taller than your mother, then I am taller than your mother. If either of the assumptions is broken, the conclusion does not hold.
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wingiover 14 years ago
You can only infer something from something true.
btillyover 14 years ago
Start with two false assumptions, draw a false conclusion. Where is the problem?
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