Combining the second elements of a set of ordered pairs based on their first element
10182
Combining values in one column (or part) when values in another column (or part) match
64658
How many associative binary operations for a set of two elements?
49912
Generating ordered combination of numbers
502
Removing an ordered pair from a list of ordered pairs if the second element in the list is Less than a Value
126025
Computing the inverse of a permutation
2047
Combining Multiple Lists
3392
Sum of products of elements of nonempty subsets of A set
12749
How to generate all possible combinations of vectors without caring for order?
5448
Finding the closure of some subsets of the ordered square
22274
Partitioning a natural number $n$ in order to get the maximum product sequence of its addends
123065
Pretty way to group elements at odd and even positions
66636
Problems with introducing ordered pairs axiomatically
140673
how to find the order of an element in a quotient group
106068
Ordered pair - why so complicated?
59898
Elementary manipulation with elements of group
100061
The Maximum possible order for an element $S_n$
6729
How do I sort a vector of pairs based on the second element of the pair?