User contributions for 5.68.41.67

20 August 2014

• 17:1417:14, 20 August 2014 diff hist +16 Nephroid →The evolute...: added further clarification current

19 August 2014

• 06:5406:54, 19 August 2014 diff hist −7 Implementation of mathematics in set theory →Related definitions: This must have been a mistake. xRy usually refers to an ordered pair, which as noted above, can be implemented as a set but this would be ambiguous (which implementation?). R would be less ambiguous as a set, but not include y. current