Śliwa, Wiesław2011-02-282011-02-282000-12Indag. Mathem., 11(4), 607-617http://hdl.handle.net/10593/915We solve the problem of the existence of a Schauder basis in non-archimedean Frechet spaces of countable type. Using examples of real nuclear Frechet spaces without a Schauder basis we construct examples of non-archimedean nuclear Frechet spaces without a Schauder basis (even without the bounded approximation property).enSchauder basisbounded approximation property