C. References
 Faster than the Fast Legendre Transform, the Lineartime Legendre Transform,
Yves Lucet,
Numerical Algorithms
16 (1997) 2
 The LegendreFenchel transform and the Convex Hull of a function: Fast
computational algorithms, Secondorder Smoothness and Analysis,
Yves Lucet, PhD
thesis, (ex) Laboratoire Approximation et
Optimisation, Université
Paul Sabatier, France (1997).
 Fast LegendreFenchel
Transform and Applications to HamiltonJacobi Equations and Conservation Laws,
Lucilla Corrias,
SIAM Journal on Numerical
Analysis, 33 (1996), no. 4, 15341558

Convergence of the conjugate

