The Definitions and Theorems of the Spherics of Theodosios

  • R. S. D. ThomasEmail author
Conference paper
Part of the Proceedings of the Canadian Society for History and Philosophy of Mathematics/ Société canadienne d’histoire et de philosophie des mathématiques book series (PCSHPM)


My journal article abbreviation of Euclid’s Phenomena with Len Berggren shows what the book says to those that don’t need or want the whole treatise. Its most important part is a list of the enunciations of the theorems as the obvious way to express the contents. This is a summary of the Spherics of Theodosios for “those that don’t need or want the whole treatise”. That summary is the second long section of this paper. The first section explains why, with examples, the summary cannot be just “a list of the enunciations of the theorems”.



Early stages of writing this paper were helped by Bob Alexander and Len Berggren, at a later stage Joel Silverberg, and finally an anonymous referee.


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Copyright information

© Springer International Publishing AG, part of Springer Nature 2018

Authors and Affiliations

  1. 1.St John’s College and Department of MathematicsUniversity of ManitobaWinnipegCanada

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