In the spring of 1976, George Andrews of Pennsylvania State University visited the library at Trinity College, Cambridge to examine the papers of the late G.N. Watson. Among these papers, Andrews discovered a sheaf of 138 pages in the handwriting of Srinivasa Ramanujan. This manuscript was soon designated, "Ramanujan's lost notebook." Its discovery has frequently been deemed the mathematical equivalent of finding Beethoven's tenth symphony. This volume is the third of five volumes that the authors plan to write on Ramanujan's lost notebook and other manuscripts and fragments found in The Lost Notebook and Other Unpublished Papers, publishedby Narosa in 1988. The ordinary partition function p(n) is the focus of this third volume. In particular, ranks, cranks, andcongruences for p(n) are in the spotlight. Other topics include the Ramanujan tau-function, the Rogers-Ramanujanfunctions, highly composite numbers, and sums of powers of theta functions. Review from the second volume: "Fansof Ramanujan's mathematics are sure to be delighted by this book.While some of the content is taken directly from published papers, most chapters contain new material and some previously published proofs have been improved.Many entries are just begging for further study and will undoubtedly be inspiring research for decades to come. The next installment in this series is eagerly awaited." -MathSciNet Review from the first volume: "Andrews andBerndt are to be congratulated on the job they are doing. This is the first step.on the way to an understanding of the work of the genius Ramanujan. It should act as an inspiration to future generations of mathematicians to tackle a job that will never be complete." - Gazette of the Australian Mathematical Society.
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