Someone needed this, so I made a quick collection. Introductory and more philosophical http://www.sfu.ca/~swartz/pw/text/pw_all.pdf Introductory not so philosophical/more formal http://emilkirkegaard.dk/en/wp-content/uploads/0415400678.Routledge.Logic_.An_.Introduction.Dec_.2005.pdf
Introductory material to logic
Introductory material to logic
Introductory material to logic
Someone needed this, so I made a quick collection. Introductory and more philosophical http://www.sfu.ca/~swartz/pw/text/pw_all.pdf Introductory not so philosophical/more formal http://emilkirkegaard.dk/en/wp-content/uploads/0415400678.Routledge.Logic_.An_.Introduction.Dec_.2005.pdf