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We continue the classification of isomorphism classes of k-involutions ofexceptional algebraic groups. In this paper we classify k-involutions for splitgroups of type F4 over certain fields, and their fixed point groups.Theclassification of k-involutions is equivalent to the classification ofsymmetric k-varieties.

Isomorphism classes of $k$-involutions of algebraic groups of type $F_4$