Isaac Argyros, Paraphrase of the Anonymous Greek Commentary on the Tetrabiblos

Madrid, UC-BH, cod. 122 · 101r

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Simpliciter enim, si alterum luminarium angulare fuerit et una ex maleficis cum eo simul fueritextiterit aut e diametro id aspexerit, atque hec quidem partiliter et secundum isosceliam, nulla quidem benefica