david bennett·Oct 16THE RHAPTA THEOREM“Rhapta, metropolis of Barbaria, a short distance from the sea (7 degrees S)” [Ptolemy — ‘Geography’ Book 4 Chapter 7]
Nikita Averitchev·Oct 25, 2025Faster K-Means with Ptolemy’s Inequality: skipping distance calculations without changing resultsClustering loves distances. Your CPU doesn’t. In our BTW 2025 short paper we extend Elkan’s accelerated k-means by adding bounds derived…
Frank Leveille·Sep 29, 2025The Philosophy of Science, Chapter 2, Part 1Religion and Science: The Last Skirmish Copernicus
Villanuevaierann·May 8, 2023From Birthplace of Anatomy to Burning Ashes: The Story of the Library of AlexandriaThe Library of Alexandria was one of the most famous libraries in ancient history, and it was located in Alexandria, Egypt. It was founded…
InGlobetrottersbyBrad Yonaka·May 4, 2023The Enigmatic Temple of HathorNot your garden variety ancient Egyptian monumentA response icon18A response icon18
InThe Infinite UniversebyTim Andersen, Ph.D.·Apr 11, 2023The beauty of stereographic projectionFrom the Planisphaerium to CrystallographyA response icon3A response icon3
InPaper PoetrybyJames G Brennan·Jul 25, 2021Claudius PtolemyFree verse tributeA response icon22A response icon22
InDestination: HistorybyChantelle Bryant·Apr 25, 2021Ptolemy and Alexander, brothers?Friends or brothers? Who knows.
