User:RayAYang/Sandbox

Articles of interest

 * Maximum principle


 * Variational inequality
 * This article needs lots of stuff added.


 * Riesz rearrangement inequality


 * Boggio's formula


 * Obstacle problem


 * Schauder estimates


 * User:Mathbot/Mathematicians missing photo
 * Resume photo emplacing at Per Enflo


 * Method of continuity


 * George P. Shultz


 * Henry Kissinger


 * Of Paradise and Power


 * Perron method

Persons for whom images exist, but have uncertain copyright status

 * Ulisse Dini from Hamburg.
 * young Donald Rumsfeld class picture at

Images that need to be downgraded to reduced resolution to pass fair use requirements

 * Wolfgang Doeblin from.

Essays and ruminations

 * User:RayAYang/On Moreschi and the nationalism problem

Useful tools

 * Zeteo the citation tool.

PDEs