Side note: Hexadecimal = base 16, sometimes used in computers, whereas normally we just use base 10. Here is another way to think about it: (10*5)+2=(16*3)+4 See the 5 & 2 with a 10 and the 3 & 4 with a 16? If this is hopelessly confusing, and you actually care, just let me know, and I'll start over.
Over in Diana Hsieh's blog's comments section they have somehow got on the subject of what Thomas Aquinas meant when he talked about "unity in quantity" vs. "unity in quality." He did speak of both, although on her blog they don't seem to know that yet. His idea was that "unity in quantity" meant equality, like numerical equality I guess. Sort of like 52 in decimal equals 34 in hexadecimal.
As for "unity in quality," by that Thomas meant similarity or likeness. The idea is that two yellow objects are similar in that they are "one in being yellow," or something like that.
Rhyme of the day:
My mother swears
That I was there.
But I can't recall
My arrival at all.
If for some reason you really want to see how Thomas uses the phrases mentioned above, I have some examples. But note that these translations have "one" or "oneness" where some translators would have "unity".
On this first one, skip to the long quote way at the bottom on note 53: