# Thread: an introduction to general topology by PAUL.E.LONG

1. ## an introduction to general topology by PAUL.E.LONG

PAGE 248 QUESTIONS NUMBERS :
Q.6 AND Q.8
we can gives an examples from discrete or standard topology but how ???
the questions are :
Q.1: PROVE :
if :
$\displaystyle y\in\overline{S(x)}r$ then d(x,y) $\displaystyle \leq r$ and give an example to show that the converse is not always true .{ $\displaystyle \overline{S(p)}r$ is not necessary equal to $\displaystyle \mbox{A}=$ $\displaystyle {{ x \in X : d(x,y) \leq r }}$ }

2. You are going to need to actually write out the questions if you want answers. If you expect anonymous people on the internet to take their time to answer your questions on the internet, I suggest you put in a good faith effort to spend some time to actually write out what it is you need help with.

3. ## i'm sorry

but i don't know how i write math symbols??!!!

4. Originally Posted by flower3
but i don't know how i write math symbols??!!!
These links may help you.
http://www.mathhelpforum.com/math-he...-tutorial.html

Karl's Calculus Tutor - Sending Math Notation over Email

Beginning LaTeX

5. $\displaystyle \sqrt{a^2}$

6. thanks plato

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### general topology paul long solution

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