集合论

网页

<http://www.mathpages.com/home/ifundat.htm> <http://math.boisestate.edu/~holmes/holmes/nf.html> <http://www.eleves.ens.fr:8080/home/madore/math/ac_var.html> <http://bounbo.toonywood.org/xavier/maths/choix.html> <http://www.combinatics.org/Surveys/ds5/VennEJC.html>

协会

<http://www.ensor.org/math/SetTheory（英语）/>

页面个人信息-主页

<http://www.math.ufl.edu/~jal/set_theory.html>

词典-词典

<http://www.les-mathematiques.net/a/a/a/node2.php3>

文件-纸张

<http://math.dartmouth.edu/~doyle/docs/three/thre3/three.html> <http://mizar.org/JFM/Vol1/subset_1.html> <http://mizar.org/JFM/Vol1/zfmisc_1.html> <http://mizar.org/JFM/Vol1/enumset1.html> <网址：http://www.ucl.ac.uk/~ucahcjm/stp.html> <http://www.math.ufl.edu/~jal/set_theory.html>

留置权-链接

<liens_math.html> <liens_logic.html> <liens_goedel.html>