 The use of three fundamental criteria—subject/genus (mawḍūʿ/ğins), principles (mabādiʾ), and per se attributes (ʿawāriḍ ḏātiyya)—to determine identity, overlap, or distinctness between domains of scientific inquiry is in line with Aristotelian orthodoxy. But Avicenna takes the criteria to a whole different level and articulates a complex network of relations of superordination and subordination whereby scientific knowledge is rigidly organized in hierarchical structures that reflect underlying ontological relations between their objects and attributes. For a detailed account see (Hugonnard-Roche 1988) and (Strobino 2017).