Rankin-cohen Brackets and Van Der Pol-type Identities for the Ramanujan’s Tau Function B. Ramakrishnan and Brundaban Sahu
نویسنده
چکیده
In [5], D. Lanphier used differential operators studied by Maass [6] to prove the above van der Pol identity (2). He also obtained several van der Pol-type identities using the Maass operators and thereby obtained new congruences for the Ramanujan’s tau-function. In [9], D. Niebur derived a formula for τ(n) similar to the classical ones of Ramanujan and van der Pol, but has the feature that higher divisor sums do not appear
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