Œċ - Unordered Pairs (With Replacement)
Tags: miscellaneous , math , array , combinatorics
This atom is monadic, which means it takes one argument.
All unordered pairs with replacement (i.e. including pairing an element to itself).
3R Œċ/code> returns
[[1, 1], [1, 2], [1, 3], [2, 2], [2, 3], [3, 3]] -
[2, 2], etc. are included.
This atom should work roughly the same way as or very similarly in concept to the following code snippets (some edge case exceptions may exist):