In Memoriam
 
Emma Hunt and Charles Pearce

i

Some problems about the representation of monotone operators by convex functions
 
JeanPaul Penot and Constantin Zalinescu

1

Plane poloidaltoroidal decomposition of doubly periodic vector fields. Part 1. Fields with divergence
 
G. D. McBain

21

Plane poloidaltoroidal decomposition of doubly periodic vector fields. Part 2. The Stokes equations
 
G. D. McBain

39

Existence of solutions and optimal control problems for hyperbolic hemivariational inequalities
 
Jong Yeoul Park and Sun Hye Park

51

Symmetry analysis of rotating fluid
 
K. Fakhar, ZuChi Chen and Xiaoda Ji

65

Existence of seamount steady vortex flows
 
B. Emamizadeh and F. Bahrami

75

The existence of periodic and subharmonic solutions to subquadratic discrete Hamiltonian systems
 
Zhan Zhou, Jianshe Yu and Zhiming Guo

89

Cavities at atmospheric pressure behind twodimensional bodies at an angle of attack
 
P. M. Haese

103

Elastic plastic analysis of shallow shellsa new approach
 
J. Mazumdar, A. Ghosh, J. S. Hewitt and P. K. Bhattacharya

121

Numerical integration of the RLW equation using cubic splines
 
Dursun Irk, Idris Dag and Abdülkadir Dogan

131
