ya?ya: ibn ?adi: sulla differenza ?a la logica greca e la grammatica araba

?is paper examines the Treatise on the Difference between the two fields of philosophical logic and Arabic grammar (Maq?la f? taby?n al-fa?l bayna ?ina'atay al-man?iq al-falsaf? wa-l-na?w al-'arab?) by Ab? Zakariy?' Ya?y? ibn 'Ad?, providing also its Italian translation. It will appear that Ya?y? ibn 'Ad?'s approach is based on F?r?b?'s ideas about the relationship between logic and the sciences of language. Even more important is the fact that the difference established by Ya?y? ibn 'Ad?'s between logic and grammar both as for the subject (maw??') and as for scope (?arad) counts as the source for Avicenna's distinction between subject (maw??') and scope (?arad) of the metaphysics