ABSTRACT
Initially, in 1952, Szasz [10] published some results on products of summability methods. Subsequently, Rajgopal [7] in 1954, Parameswaran [6] in 1957, Ramanujan [8] in 1958, etc. published some more results on the products of summability methods. Later on, Das [2] in 1969 proved some related results on the absolute product summability. In 2008, Sulaiman [9] provided a result on the indexed product summability of an infinite series. The result found by Sulaiman was then extended by Paikray et al. [5] in 2010. Also, we can see some more developments on this idea in Ref. [1,3,4] in the recent past.
