Monthly archive for 2015-10 under links 2015 October π Logic & Proofs | Open Learning Initiative Oct. 30, 2015, 10:30 p.m. via pocket Fri, Oct. 30, 2015, 10:30 p.m. / Roy Tang / links / #broken-link #learning / Syndicated: archive.org Previous: Monthly archive for 2015-09 Next: Monthly archive for 2015-11