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Only the notes changed on this branch were built. The rest of the site is not here, which is why this was quick.

Testing a solver against exact solutions

Underworld3 ships thirteen exact Stokes solutions and checks them by differentiating each one against the momentum balance rather than by comparing it to the kernel it came from. Doing it that way found four defects, two of them in published sources that have been vendored and reused for twenty years, and settled a contradiction between two printed equations in a third.