Prove the following statement. Theorem 1.1.8 If a nonempty set S of real numbers is bounded below, then inf S is the unique real number a such that (a) x > a for all x in S; (b) if e > 0 (no matter how small ), there is an xo in S such that xo < a + e.

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Author:Erwin Kreyszig
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Prove the following statement.

 

Prove the following statement.
Theorem 1.1.8 If a nonempty set S of real numbers is bounded below, then inf S is
the unique real number a such that
(a) x > a for all x in S;
(b) if e > 0 (no matter how small), there is an xo in S such that xo < a + e.
Transcribed Image Text:Prove the following statement. Theorem 1.1.8 If a nonempty set S of real numbers is bounded below, then inf S is the unique real number a such that (a) x > a for all x in S; (b) if e > 0 (no matter how small), there is an xo in S such that xo < a + e.
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