Differentiability of pointwise maximum
Some notes on the differentiability of the pointwise max of a family of functions and the Fritz-John and Mangasarian-Ffromowitz optimality conditions
Variational Analysis
Normal and tangent cones
Useful convex analysis stuff
Rayleigh quotient
Some notes on the Rayleigh quotient
Support functions
Properties of support functions
Generalised directional derivatives
Examples on the Dini, Clarke and Michel-Penot directional derivatives