SIAM Journal on Control and Optimization, Vol.51, No.2, 1639-1650, 2013
THE NONOCCURRENCE OF THE LAVRENTIEV PHENOMENON FOR A CLASS OF VARIATIONAL FUNCTIONALS
We prove that the Lavrentiev phenomenon does not occur for the functional integral(Omega)[l(vertical bar del u(x)vertical bar) + G(u)] dx on u - u(0). is an element of W-0(1,1)(Omega), where L and G are convex functions subject to additional regularity assumptions, and where partial derivative Omega and u(0) are smooth.