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==Πηγές==
* {{cite book |last=Armstrong |first=M. A. |title=Basic Topology |series=Undergraduate texts in mathematics |year=1983 |origyear=1979 |publisher=Springer |isbn=0-387-90839-0 |ref=harv}}
* {{cite book |last=Bredon, |first=Glen E., ''|title=Topology and Geometry'' (Graduate Texts in Mathematics), |publisher=Springer; 1st |edition=1η (October |date=17, Οκτωβρίου 1997). ISBN |isbn=0-387-97926-3.}}
* [[Nicolas{{cite book Bourbaki|last=Bourbaki, |first=Nicolas]]; ''|title=Elements of Mathematics: General Topology'', |publisher=Addison-Wesley (|year=1966).}}
* [[Ronald{{cite Brownbook (mathematician)|last=Brown, |first=Ronald]], ''|title=Topology and groupoids'', |publisher=Booksurge (|year=2006) ISBN |isbn=1-4196-2722-8 (3rd |edition=από ofβιβλία differentlyδιαφορετικών titledτίτλων: books)3η }} ''(order from amazon.com).''
* [[Eduard{{cite book Čech|Čech,last=Čech |first=Eduard]]; ''|title=Point Sets'', |publisher=Academic Press (|year=1969).}}
* [[William{{cite Fultonbook (mathematician)|last=Fulton, |first=William]], ''|title=Algebraic Topology'', (Graduate Texts in Mathematics), |publisher=Springer; 1st |edition=1η (September |date=5, Σεπτεμβρίου 1997). ISBN |isbn=0-387-94327-7.}}
* {{cite book |last=Lipschutz, |first=Seymour; ''|title=Schaum's Outline of General Topology'', |publisher=McGraw-Hill; 1st |edition=1η (June |date=1, 1968).Ιουνίου ISBN1968 |isbn=0-07-037988-2.}}
* [[James{{cite book Munkres|last=Munkres, |first=James]]; ''|title=Topology'', |publisher=Prentice Hall; 2nd |edition=2η (December |date=28, Δεκεμβρίου 1999). ISBN |isbn=0-13-181629-2.}}
* {{cite book |last=Runde, |first=Volker; ''|title=A Taste of Topology (Universitext)'', |publisher=Springer; 1st |edition=1η (July |date=6, Ιουλίου 2005). ISBN |isbn=0-387-25790-X.}}
* [[Lynn{{cite Arthurbook Steen|last1=Steen, |first1=Lynn A.]] and [[J. Arthur |last2=Seebach, Jr.|Seebach, first2=J. Arthur Jr.]]; ''[[|title=Counterexamples in Topology]]'', |publisher=Holt, Rinehart and& Winston (|year=1970). ISBN |isbn=0-03-079485-4.}}
* {{cite book |author=Vaidyanathaswamy, R. |title=Set Topology |publisher=Chelsea Publishing Co. |year=1960 |isbn=0-486-40456-0}}
* {{cite book |author=Willard, Stephen |title=General Topology |publisher=Dover Publications |year=2004 |isbn=0-486-43479-6}}
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