Second variation of liquid crystal energy at x [absolute value of x]

1991-01-01T00:00:00Z (GMT) by David Kinderlehrer Biao Ou
Abstract: "A new and simplified proof of the sign of the second variation of the Oseen-Frank Energy in terms of the elastic constants is given. The proof relies on the frame indifference of the energy and a new expression for the second invariant null lagrangian as a surface integral."