Findings:
- acta diurna
- acta publica
- ACTA
- Acta est fabula
- Acta Senatus
- Mathematica
- On Formally Undecidable Propositions of Principia Mathematica and Related Systems
- Principia Mathematica
- Principia Mathematica Philosophiae Naturalis
- IBM Mathematica Peep Shows
- Mathematica and free software
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