[FOM] Number theory proof mentioned by Frege

[Alasdair Urquhart]

Dear Chris:

> Thanks for your pointer.  It turns out that Remmert, in the chapter on the
> Fundamental Theorem of Algebra, covers the same passage in Hankel's book
> that Frege mentions.

Thanks, I overlooked that passage in the book. According to Remmert, the
result is actually due to Weierstrass in his Berlin lectures of 1863,
but was published for the first time by Hankel in 1867.  Hence,
it predates the Frobenius theorem by more than a decade.

Best regards,
Alasdair