The matrix associated with the financial regime and the matrix associated with the regime of Number Theory are both sparse, and sparse to the same degree, but are orthogonal.

(aka reduced totient function)
(aka least universal exponent function)
Here’s the link to the Wikipedia article on it.
keywords:
[Number Theory]
[lambda function]
[λ function]
[ψ function]
[psi function]

Wikipedia says that linguist / anthropologist Nancy Dorian’s work “blurred the lines between linguistics and ethnology”. Presumably we can be forgiven for calling the blurring ‘Dorian gray’.

All historical times frames are morally and technically equivalent, when divided by ab initio time. Hence the ‘homogeneity’ of history – exhibiting global pattern while being locally random, just like the distribution of the primes.

(“The Army’s language program is radically different from the conventional academic program in languages.”)
Here’s the link.

Linguistic Donuts and Danishes

The Mohune of a Number