The Order of elements does not matter {1, 2, 3} = {3, 2, 1} Repetition of elements does not matter {1, 1, 2, 3, 3} = {1, 2, 3} The objects in a set are called the ...
ABSTRACT: In many problems of combinatory analysis, operations of addition of sets are used (sum, direct sum, direct product etc.). In the present paper, as well as in the preceding one [1], some ...
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