A geometric triple is a triple of positive integers
satisfying
for which
. In particular, such a triple
is geometric if its terms form a geometric sequence
with common ratio
where
There is a one-to-one correspondence between the set of equivalence
classes of geometric triples and the set
of equivalence classes of harmonic
triples satisfying
and
(VanderBurgh 2010, pp. 141-143). Here, two triples
and
belong to the same equivalence
class iff
, i.e., if there exists some positive real
number
such that
.