Cyclopaedia Universalis
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Cyclopaedia Universalis
Knowledge Representation (alpha)
---= Universalia & Generalia =---
Mathematica
Continuum Model
Tiered Holonic (C.G. Butler)
Conceptual Domains
Classical Greek
Ptolemy
Attachments
Ptolemy - Wikipedia
Parents
Classical Greek
Past
Children
A Miraculous Proof (Ptolemy's Theorem)
Pentagons and the Golden Ratio
Triangles have a Magic Highway