Linked from

The 63 pages that link to Ptolemy, each with the reason it gives.

• Ibn YunusRelated: Ibn Yunus worked within a mathematical astronomy whose foundations included Ptolemy’s inherited models.

• Matthias RingmannRelated: Ptolemy’s work supplied a classical framework that Renaissance cartographers such as Ringmann revisited.

• Muhammad al-IdrisiRelated: Ptolemy’s geographic tradition formed part of the intellectual background to medieval world mapping.

• SerpensRelated: Ptolemy included Serpens among the 48 constellations in the Almagest.

• Anania ShirakatsiRelated: His astronomical and geographical writings were major sources for the traditions Shirakatsi engaged.

• Beehive ClusterRelated: His star catalog contains an early recorded description of the Beehive.

• Casey's theoremRelated: His theorem is the classical special case generalized by Casey.

• European science in the Middle AgesRelated: His astronomy and geography entered medieval Europe through translation and commentary.

• MicroscopiumRelated: Microscopium was created centuries after the classical constellations in Ptolemy’s catalogue.

• NabonassarRelated: Ptolemy used the Era of Nabonassar when organizing historical astronomical observations.