たる? What form is this?


So I've been reading Tsukihime the past few weeks and I found this sentence.

> 君の理論はわからんな。それでは命題たる永遠には程遠いぞ、蛇よ。

The fan translations says:

> I do not understand your reasoning. That is far from the thesis of eternity,
> serpent.

There are this 2 guys, one of them is serpent, who are discussing about
eternal life.

I do not understand how come they translated this way.

Can someone help?




I think the original Japanese is not correct. It tried to use a difficult
word, and the meaning was not precise.

命題 means propositions in philosophy or in mathematics. In mathematics, a
proposition is a statement which is less important than a theorem. And, you
write "命題 2.5 (Prop. 2.5)" just before proving it. So, some people use this
word as "What you are just going to prove (seek) with all your effort."

たる is basically old である.

Over all, the direct translation is "Eternity, the thing to be sought."




I think the original Japanese is not correct. It tried to use a difficult
word, and the meaning was not precise.

命題 means propositions in philosophy or in mathematics. In mathematics, a
proposition is a statement which is less important than a theorem. And, you
write "命題 2.5 (Prop. 2.5)" just before proving it. So, some people use this
word as "What you are just going to prove (seek) with all your effort."

たる is basically old である.

Over all, the direct translation is "Eternity, the thing to be sought."

