9.7 Web material 135http://en.wikipedia.org/wiki/Real_numbers
http://en.wikipedia.org/wiki/Uncountable_set
http://eom.springer.de/f/f040090.htm
http://eom.springer.de/U/u095130.htm
http://kr.cs.ait.ac.th/~radok/math/mat5/algebra21.htm
http://math.berkeley.edu/~benjamin/741ecture38s05.pdf
http://mathforum.org/alejandre/numerals.html
http://mathworld.wolfram.com/CountablyInfinite.html
http://numbersorg.com/Algebra/
http://pirate.shu.edu/proj ects/reals/infinity/uncntble.html
http://planetmath.org/encyclopedia/MathbbR.html
http://planetmath.org/encyclopedia/Real.html
http://planetmath.org/encyclopedia/Uncountable.html
http://plato.Stanford.edu/entries/set-theory/
http://www-db.Stanford.edu/pub/cstr/reports/cs/tr/67/75/
CS-TR-67-75.pdf
http://www.absoluteastronomy.com/c/countable_set
http://www.answers.com/topic/complex-number
http://www.cse.cuhk.edu.hk/~csc3640/tutonotes/tuto3.ppt
http://www.csie.nctu.edu.tw/~myuhsieh/dmath/Module-4.5-
Countability.ppt
http://www.cut-the-knot.org/do_you_know/few_words.shtml
http://www.dpmms.cam.ac.uk/~wtglO/countability.html
http://www.eecs.umich.edu/~aey/eecs501/lectures/count.pdf
http://www.faqs.org/docs/sp/sp-121.html
http://www.faqs.org/docs/sp/sp-122.html
http://www.introducingmathematics.com/settheoryone/01.html
http://www.jcu.edu/math/vignettes/infinity.htm
http://www.math.brown.edu/~sjmiller/l/CountableAlgTran.pdf
http://www.math.niu.edu/~beachy/aaol/contents.html
http://www.math.niu.edu/~rusin/known-math/index/11-XX.html
http://www.math.niu.edu/~rusin/known-math/index/12-XX.html
http://www.math.toronto.edu/murnaghan/courses/mat240/field.pdf
http://www.math.ucdavis.edu/~emsilvia/mathl27/chapter1.pdf
http://www.math.ucdavis.edu/"emsilvia/mathl27/chapter2.pdf
http://www.math.uic.edu/"lewis/laslOO/uncount.html
http://www.math.uiuc.edu/~r-ash/Algebra/Chapter3.pdf
http://www.math.umn.edu/~garrett/m/intro_algebra/notes.pdf
http://www.math.unl.edu/~webnotes/classes/classAppA/classAppA.htm
http://www.math.uvic.ca/faculty/gmacgill/guide/cardinality.pdf
http://www.math.uvic.ca/faculty/gmacgill/M222F03/Countable.pdf
http://www.math.vanderbilt.edu/"schectex/courses/thereals/
http://www.math.wise.edu/~ram/math541/
http://www.mathreference.com/set-card,cable.html
http://www.mes.vuw.ac.nz/courses/MATH114/2006FY/Notes/11.pdf
http://www.msc.uky.edu/ken/mal09/lectures/real.htm
http://www.swarthmore.edu/NatSci/wstromql/stat53/CountableSets.doc
http://www.topology.org/tex/conc/dgchaps.html
http://www.trillia.com/zakon-analysisl-index.html