This paper investigates the orbital stability of periodic traveling wave solutions to the generalized Zakharov equations {iu_t+ u_(xx)= uv + |u|~2u,v_(tt)-v_(xx
We obtain some normality criteria of families of meromorphic functions sharing values related to Hayman conjecture, which improves some earlier related results.
Using Nevanlinna theory of the value distribution of meromorphic functions, we investigate the problem of the existence of meromorphic solutions of some types o