%0 Journal Article %A Hedrlín, Zdeněk %A Vopěnka, Petr %T An undecidable theorem concerning full embeddings into categories of algebras %J Commentationes Mathematicae Universitatis Carolinae %D 1966 %P 401-409 %V 07 %N 3 %I mathdoc %U http://geodesic.mathdoc.fr/item/CMUC_1966__7_3_a13/ %G en %F CMUC_1966__7_3_a13