  In this article was proved, that any linear equation $Lu=f$ in the case of
any linear versions of the Galerkin method, has at least as many unsolved
right-hand sides in the form of linear combinations $f=L\psi_1 +...+L\psi_N
+L\psi_{N+1} +...+L\psi_{5N} +...+L\psi_{T}$, as there are finite-dimensional
linear subspaces with dimensionality as much than five times as the number of
basis functions $\psi_1,..., \psi_N$ .
