ordered set
noun
logic maths a sequence of elements that is distinguished from the other sequences of the same element by the order of the elements. Thus is not identical with
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition
© William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012