ctan-ann - ptolemaicastronomy Announcements of the Comprehensive TeX Archive Network ctan-ann-ptolemaicastronomy 2026-09-11T07:28:10Z New on CTAN: ptolemaicastronomy mailman.807.1554611490.4318.ctan-ann@ctan.org 2019-04-07T06:31:27Z Richard Zach submitted the ptolemaicastronomy package. ... Richard Zach submitted the ptolemaicastronomy package. Version number: 1.0 License type: lppl1.3c Summary description: Diagrams of sphere models for variably strict conditionals (Lewis counterfactuals) Announcement text:
David K. Lewis (Counterfactuals, Blackwell 1973) introduced a sphere ... ]]> CTAN Announcements ctan-ann at ctan.org