User contributions
- 01:15, 26 August 2011 (diff | hist) . . (+89) . . OLPC research/papers
- 00:56, 26 August 2011 (diff | hist) . . (+89) . . OLPC research
- 00:32, 26 August 2011 (diff | hist) . . (+91) . . Category:Mathematics
- 23:51, 25 August 2011 (diff | hist) . . (+89) . . Physics