Reports on Mathematical Physics 59/1

Contents of the Volume 59, Number 1 J. KIJOWSKI and R. WERPACHOWSKI: Universality of affine formulation in generał relativity 1-31 F. JARAD and D. BALEANU: Discrete variational principles for Lagrangians linear in velocities 33-43 V. A. DANILENKO and S. L SKURATIVSKYY: Invariant chaotic and quasi- -periodic solutions of nonlinear nonlocal models of relaxing media. 45-51 J. MILEWSKI and T. LULEK: Propagators of N anyons on a C plane 53-61 J. JANYŚKA: Higher-order Utiyama invariant interaction 63-81 V. ALDAYA, E. SANCHEZ-SASTRE and M. CAEIXTO: Beyond standard gauge theory: extended gauge and diffeomorphism symmetry and mass gen-eration 83-109 G. S. ASANOY: Finsleroid-Finsler parallelism. Cosmological aspects 111-125 M. GADELLA and F. GÓMEZ: Dirac formulation of ąuantum mechanics: recent and new results 127-143