User contributions
- 16:52, 17 June 2018 (diff | hist) . . (+12) . . Symmetric sum (roman lettering seems appropriate for the "sym" subscript)
- 16:50, 17 June 2018 (diff | hist) . . (-5) . . m Symmetric sum
- 16:48, 17 June 2018 (diff | hist) . . (+405) . . Symmetric sum (Added subset interpretation of symmetric sum notation.)
- 14:54, 17 June 2018 (diff | hist) . . (-6) . . m Symmetric sum
- 14:53, 17 June 2018 (diff | hist) . . (+186) . . Symmetric sum (Added in the definition of symmetric function and cleaned things up a bit.)
- 14:37, 17 June 2018 (diff | hist) . . (+141) . . Symmetric sum
