Ciro Santilli @cirosantilli  40

Created by MongoDB, attempts to be even more restrictive than AGPL by more explicitly saying that indirect automatic requests are also included in the "you must give source" domain: opensource.stackexchange.com/questions/8025/difference-between-mongodb-sspl-and-gnu-agpl

The base use case is:which is what MongoDB is trying to ensure, which sounds fair.

This means that e.g. if you do an UPDATE query on multiple rows, and power goes out half way, either all update, or none update.

This is different from isolation, which considers instead what can or cannot happen when multiple queries are running in parallel.

Determines what can or cannot happen when multiple queries are running in parallel.

See Section "SQL transaction isolation level" for the most common context under which this is discussed: SQL.

Positive center is way more popular: gearspace.com/board/electronic-music-instruments-and-electronic-music-production/1222518-center-negative-vs-center-positive-power-supply.html

Shows up when trying to solve 2D wave equation on a circular domain in polar coordinates with separation of variables, where we have to decompose the initial condition in termes of a fourier-Bessel series, exactly like the Fourier series appears when solving the wave equation in linear coordinates.

For the same fundamental reasons, also appears when calculating the Schrödinger equation solution for the hydrogen atom.