Re: How do I go about solving a problem like this:?

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#738

From: Chris Knight
Date: Sun, 07 Jan 1996 00:00

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Let S be a set and let us define an operation * on S by insiting that the 
following two riles hold in S:

1. If a, b are any objects in S, then a * b = a.
2. If a, b are any objects in S, then a * b = b * a.

Show that S can have at most one object.




**Thanks!

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From: cknight@Direct.CA (Chris Knight)
Subject: Re: How do I go about solving a problem like this:?
Date: 1996/01/07
Message-ID: <4cp963$duh@grid.direct.ca>
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organization: "If you fool around with a thing for very long, you will screw it up."
newsgroups: can.schoolnet.math.sr