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 Post subject: Real analysisPosted: Wed Feb 07, 2018 5:33 pm

Joined: Mon Feb 05, 2018 4:22 am
Posts: 7
what can you say A if LUB A = GLB A ?

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 Post subject: Re: Real analysisPosted: Wed Feb 07, 2018 7:47 pm

Joined: Sat Nov 07, 2015 6:12 pm
Posts: 830
Location: Larisa
Asis ghosh wrote:
what can you say A if LUB A = GLB A ?

I beg your pardon?

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Imagination is much more important than knowledge.

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 Post subject: Re: Real analysisPosted: Wed Feb 07, 2018 10:47 pm
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Joined: Mon Nov 09, 2015 1:36 am
Posts: 444
Location: Ioannina, Greece
Asis ghosh wrote:
what can you say about A if LUB A = GLB A ?

Maybe LUB is L(owest)U(pper)B(oundary) i.e. $\sup$ and GLB is G(reatest)L(ow)B(oundary) i.e. $\inf$.
The main question is what kind of set is $A$? Since we talking about $\inf{A}$ and $\sup{A}$ it must be given where lies $A$ i.e. it considered as a subset of what?

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Grigorios Kostakos

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 Post subject: Re: Real analysisPosted: Thu Feb 22, 2018 6:12 am

Joined: Mon Feb 05, 2018 4:22 am
Posts: 7
please prove this question

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