Web Links for Chapter 3

Page 116, Relations

The Math Department at California State University, San Bernardino has help on relations at http://www.math.csusb.edu/notes/cgi/contents.cgi. See also, http://www.jgsee.kmutt.ac.th/exell/Logic/Logic41.htm and http://www.jgsee.kmutt.ac.th/exell/Logic/Logic42.htm.

Page 125, Equivalence Relations

Old Dominion has help on equivalence relations at http://www.cs.odu.edu/~toida/nerzic/content/relation/eq_relation/eq_relation.html.Cut-the-Knot has further information at http://www.cut-the-knot.com/blue/equi.html.

Page 132, Matrices of Relations

See my own site mat_rel.pdf.