Ciro Santilli @cirosantilli 37

Related to what does it mean that photons are force carriers for electromagnetism?.

There is a Turing machine that halts for every member of the language with the answer yes, but does not necessarily halt for non-members.

Non-examples: cs.stackexchange.com/questions/52503/non-recursively-enumerable-languages

As per classification of finite fields those must be of prime power order.

Video "Finite fields made easy by Randell Heyman (2015)" at youtu.be/z9bTzjy4SCg?t=159 shows how for order $9=3\times 3$. Basically, for order $p^n$, we take:For a worked out example, see: GF(4).

This is how you transform the Lagrangian into the Hamiltonian.

Set of eigenvalues of a linear operator.

This is generally good, especially compared to how crappy Evince, the default Ubuntu one, has been around 2014-2020.

Our minimal definition of "electronic money" is the following.

Instead of creating legal tender such as Dollars as banknotes or transactions in some complex obscure banking system, the government offers an official simple centralized API that represents it instead.

Each citizen or legal entity has an account there, and transfers between registered users are just simple API calls.

So for example you would e able to put all your money in the government account instead of using useless banks. And then you would invest it as you want with the investment company of your choice, without tying the "my money is here" with "this is the best investment" aspects of banks.