Exact(4)
And unlike a Form, which would seem to have to be numerically the same in each particular, the form-copies will differ from one another since they are distinct individual property-instances, not universals.
21 is a markedly theological one, namely whether, if the soul were to take on other ashes at resurrection, a man would be numerically the same as he was before.
It would seem that by being the same god, they must be numerically the same entity; "they" are really one, and so "they" can't differ in any way (that is, this one entity can't differ from itself).
While it is probably not a surprise to learn that rivers are the same in number only in a less proper sense, it is striking that Buridan goes on to assert that plants and non-rational animals too can only be numerically the same in this less proper sense (Quaestiones super De gen. 1.13 (2010, 114 15)).
Similar(4)
This less proper mode of numerical sameness allows us to claim that the Nile River here today is numerically the same river as the Nile back in Herodotus' time.
The amount of this heat is characteristic of the substance, and it is numerically the same as the heat of vaporization.
This means that they needn't be, but in fact are "numerically the same" without being identical.
If x is the same in essentia as y, then x is numerically the same as y.
Related(1)
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Since I tried Ludwig back in 2017, I have been constantly using it in both editing and translation. Ever since, I suggest it to my translators at ProSciEditing.

Justyna Jupowicz-Kozak
CEO of Professional Science Editing for Scientists @ prosciediting.com