This means, first of all, that a genus-difference definition of a thing, which does not identify really distinct parts in it, cannot serve as a middle term in demonstration.
In a logical sense, as predicative expressions, 'transcendental terms' are outside the range of the five predicables or universals listed by Porphyry in his Isagoge to Aristotle's Categories, i.e. they are not a genus, species, difference, property, or accident.
This makes his logical system considerably different from the Aristotelian/Neo-Platonic systems of the Middle Ages, since for the latter the predicative relation of any sentence of the subject/copula/predicate form had to be understood as modally determined by the particular nature of the predicable corresponding to the predicate (i.e., its species, genus, difference, proprium, accident).
For instance, at rank Genus differences between MTR and LCA range from 27.54% for dataset M3 coverage 4× to 89.37% for dataset M2, coverage 1×.
Therefore, individual substances cannot be composed of anything except particular forms and matter, whereas universals are composed of a genus and specific difference as well as by any other universal form above the genus.
Based on the limitations of the study and the analysis on a genus level significant differences in the biofilm composition of diseased peri-implant and periodontal tissues were not observed.
This means that the within-genus difference in Spirogyra exceeds the differences among the remaining genera.
If the relation between subject and predicate, Porphyry claims, is such that the predicate belongs to the essence of the subject, then it is either a genus, or species, or difference; if the predicate does not belong to the essence of the subject, it is either convertible with it, and then it is a property (proprium), or if not convertible, then it is an accident.
Moreover, even within the Buthidae family, vast abundance difference can be observed in venom compositions between genus to genus, different species within a genus and individuals within a species[ 10- 12].
See also the following argument Thomas Aquinas records in favor of universal hylomorphism (Aquinas [1949], article 1, 24th preliminary argument, p. 19): "Furthermore, every thing which is in a genus is composed of genus and difference.
A specific difference distinguishes two different species of a genus from each other.
