On an evolution operator connecting Lagrangian and Hamiltonian formalisms X. GràciaJ. M. Pons OriginalPaper Pages: 175 - 180
Ostrogradski's theorem for higher-order singular Lagrangians J. M. Pons OriginalPaper Pages: 181 - 189
A classical solution of scalar-spinor interaction models with higher derivatives on even-dimensional spaces Kazuyuki Fujii OriginalPaper Pages: 197 - 200
Block averaging renormalization group for lattice and continuum euclidean fermions: Expected and unexpected results Tadeusz BalabanMichael O'CarrollRicardo Schor OriginalPaper Pages: 209 - 214
Local quantum field theories involving the U(1) current algebra on the circle Roman R. PaunovIvan Todorov OriginalPaper Pages: 215 - 230
Soliton geometry and the vacuum gravitational field equations Metin Gürses OriginalPaper Pages: 231 - 238
Vertex operator representations of the quantum affine algebra U q(B r (1) ) Denis Bernard OriginalPaper Pages: 239 - 245
Bloch electrons in a magnetic field: Rigorous justification of the Peierls-Onsager effective Hamiltonian G. Nenciu OriginalPaper Pages: 247 - 252
A signed measure completeness criterion Anatolij DvurečenskijSylvia Pulmannová OriginalPaper Pages: 253 - 261