Bill Allombert on Sun, 08 Oct 2023 10:19:40 +0200


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Re: efficient foursquare() and/or threesquare1m4() functions


On Sun, Oct 08, 2023 at 01:25:07AM +0200, hermann@stamm-wilbrandt.de wrote:
> Because I already implemented generation of ternary quadratic form Q for n
> - that represents n
> - and has determinant 1.

> Now I need to figure out how to determine matrix M, such that
> M~*Q*M is diagonal matrix. The diagonal entries of M~*Q*M
> are three square representation of n.

See qfgaussred

Cheers,
Bill.