The existence of a periodic solution of a nonlinear equation $z' + A_0z + B_0z=F$ is proved. The theory developed may be used to prove the existence of a periodic solution of the variational formulation of the Navier-Stokes equations or the equations of magnetohydrodynamics. The proof of the main existence theorem is based on Rothe method in combination with the Galerkin method, using the Brouwer fixed point theorem.
@article{104392, author = {Dana Lauerov\'a}, title = {The Rothe method and time periodic solutions to the Navier-Stokes equations and equations of magnetohydrodynamics}, journal = {Applications of Mathematics}, volume = {35}, year = {1990}, pages = {89-98}, zbl = {0703.76021}, mrnumber = {1042846}, language = {en}, url = {http://dml.mathdoc.fr/item/104392} }
Lauerová, Dana. The Rothe method and time periodic solutions to the Navier-Stokes equations and equations of magnetohydrodynamics. Applications of Mathematics, Tome 35 (1990) pp. 89-98. http://gdmltest.u-ga.fr/item/104392/
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