[6 / 2 / ?] 167KiB, 1600x1200, Pure-mathematics-formulæ-blackboard[1].jpg View SameGoogleImgOpsiqdbSauceNAO Anonymous Mon 26 Oct 2015 21:25:24 No.7618098 ViewReplyReportDelete Quoted By: >>7618119 >>7618738 >>7618818 Is there anything which has more expressive power than second order logic? Subject Name E-mail Password