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Porphyrian trees by three authors: Purchotius (1730), Boethius (6th century), and Ramon Llull (ca. 1305). In philosophy (particularly the theory of categories), the Porphyrian tree or Tree of Porphyry is a classic device for illustrating a "scale of being" (Latin: scala praedicamentalis), attributed to the 3rd-century CE Greek neoplatonist philosopher and logician Porphyry, and revived through ...
The Isagoge (Greek: Εἰσαγωγή, Eisagōgḗ; / ˈ aɪ s ə ɡ oʊ dʒ iː /) or "Introduction" to Aristotle's "Categories", written by Porphyry in Greek and translated into Latin by Boethius, was the standard textbook on logic for at least a millennium after his death.
Porphyry's invention of the "Porphyrian Tree" is noted as the first proper commentary made on Aristotle's work. A replica of the Arbor porphyriana (Porphyrian tree) used to comment on Aristotle's work by Purchotius (1730), Boethius (6th century), and Ramon Llull (ca. 1305).
Porphyrian tree Medieval dialectic Anicius Manlius Severinus Boethius , [ 6 ] [ note 1 ] commonly known simply as Boethius ( / b oʊ ˈ iː θ i ə s / ; Latin : Boetius ; c. 480–524 AD), was a Roman senator , consul , magister officiorum , polymath, historian, and philosopher of the Early Middle Ages .
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Depiction of Porphyry from the Tree of Jesse at the Sucevița Monastery, 1535. On Abstinence from Eating Animals [a] (Koinē Greek: Περὶ ἀποχῆς ἐμψύχων, romanized: Peri apochēs empsychōn, Latin: De abstinentia ab esu animalium) is a 3rd-century treatise by Porphyry on the ethics of vegetarianism.
The term Ramean tree became standard in logic books, applying to the classical Porphyrian tree, or any binary tree, without clear distinction between the underlying structure and the way of displaying it; now scholars use the clearer term Ramist epitome to signify the structure.