%0 Journal Article %T Reverse mathematics, trichotomy, and dichotomy %A Fran£żois G Dorais %A Jeffry L Hirst %A Paul Shafer %J Journal of Logic and Analysis %D 2012 %I Journal of Logic and Analysis %R 10.4115/jla.v4i0.170 %U http://www.logicandanalysis.org/index.php/jla/article/view/170