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upper bound

Defines: 
bound, lower bound, bounded, bounded from above, bounded from below
Type of Math Object: 
Definition
Major Section: 
Reference
Groups audience: 

Mathematics Subject Classification

06A06 no label found11A07 no label found

Comments

Is there any conventional math symbol which means "a is an upper bound of X"?

Or maybe there is some symbol which means "the set of all upper bounds of X"?

What I want is to write phrase "a is an upper bound of X" symbolically (not by English words).

And dually for lower bounds.
--
Victor Porton - http://www.mathematics21.org
* Algebraic General Topology and Math Synthesis
* Category Theory - new concepts

I don't know of anything standard, but

X \leq a

seems to tell the whole story pretty concisely.

Cam

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