serial relation
binary relation such that every element of the left set has a corresponding element in the right set
en-US/ˈsiɹiəl ɹɪˈleɪʃən/
en-GB/ˈsɪəɹɪəl ɹɪˈleɪʃn/
binary relation such that every element of the left set has a corresponding element in the right set