3 ms·
1 is the empty product. You generate it by multiplying nothing together. (Or to put it differently, the set of primes forms a generating set for the monoid of
by Sniffnoy 8y ago
1 is the empty product. You generate it by multiplying nothing together.
(Or to put it differently, the set of primes forms a generating set for the monoid of natural numbers under multiplication, not the semigroup. Semigroups are kind of dumb. :P )