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Abstract .
In this paper we prove that there exist infinitely many disjoint sets of positive integers which the sum of whose reciprocals is equal to unity.
Key words . disjoint set of positive integers, sum of reiprocals, unity.
(ProQuest: ... denotes formulae omitted.)
In [1] and [2] , Murthy proposed the following conjecture.
Conjecture . There are infinitely many disjoint...
