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Topic: Having a hard time with proofs
Replies: 8   Last Post: Feb 23, 2008 3:53 PM

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phubaba

Posts: 4
Registered: 2/11/08
Re: Having a hard time with proofs
Posted: Feb 11, 2008 8:24 PM
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Hey,

You are correct in your assumption that the things I have difficulties are the most basic proofs. I can usually see how things can be proved using contradiction. Like that last one you can assume x is the sup of the set of n and that x-1 couldn't be greater than all n. Then you could show that n+1 or 2 or 3 etc.. is a natural number and that this would be larger than x which would be a contradiction, since it is supposedly the sup.

I'm pretty sure that proof was in your book though :) I would however have no idea how to even approach the continuous function proof. In fact I have no idea what a compact set is.

I can use induction for more difficult induction problems (I've had to use them in cs all the time).

My biggest problem is always starting, which would probably indicate a lack of understanding of ways to use the axioms. And or a not so concrete understanding of the simple theorems.

I'm just going to keep chugging through, and hope that things get better.



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