For Ivor Grattan-Guinness on the occasion of his retirement. The work of Augustus De Morgan on symbolic logic in the mid-nineteenth century is familiar to historians of logic and mathematics alike. What is less well known is his work on probability and, more specifically, the use of probabilistic ideas and methods in his logic. The majority of De Morgan's work on probability was undertaken around 1837???1838, with his earliest publications on logic appearing from 1839, a period which culminated with the (...) publication of his Formal Logic in 1847. This article examines the overlap between his work on probability theory and logic during the earliest period of his interest in both. (shrink)

It is now just over one hundred years since the beginning of the mathematical partnership between the Cambridge analyst G. H. Hardy and the Indian mathematical genius Srinivasa Ramanujan, one of the most celebrated collaborations in the history of mathematics. Indeed, the story of how Ramanujan was brought from India to Cambridge and feted by the British mathematical establishment now borders on legendary. But, in the context of this collection of articles, it provides an interesting case study of mathematical exchange. (...) This paper considers one particular product of the Hardy-Ramanujan creative partnership: their 1918 paper on partitions, and argues that the exchange of ideas prompted by their work on this paper was facilitated in part by their membership of the premier learned body in Britain for the advancement of mathematical research: the London Mathematical Society. (shrink)

It is now just over one hundred years since the beginning of the mathematical partnership between the Cambridge analyst G. H. Hardy and the Indian mathematical genius Srinivasa Ramanujan, one of the most celebrated collaborations in the history of mathematics. Indeed, the story of how Ramanujan was brought from India to Cambridge and feted by the British mathematical establishment now borders on legendary. But, in the context of this collection of articles, it provides an interesting case study of mathematical exchange. (...) This paper considers one particular product of the Hardy-Ramanujan creative partnership: their 1918 paper on partitions, and argues that the exchange of ideas prompted by their work on this paper was facilitated in part by their membership of the premier learned body in Britain for the advancement of mathematical research: the London Mathematical Society. (shrink)