We don't have synonyms for systatic yet — it may be a rare, specialized, newly coined, or misspelled word. The closest thesaurus entries we have are ecstatic, systematic and static.
(adj) :
(mathematics) Having the property that the subgroup stability of an ordinary point P is also the subgroup stability of every point in a continuous variety containing P.
(adj) :
(mathematics) Having the property that the subgroup stability of an ordinary point P is also the subgroup stability of every point in a continuous variety containing P.