arithmeticus
From LSJ
πρέπει γὰρ τοὺς παῖδας ὥσπερ τῆς οὐσίας οὕτω καὶ τῆς φιλίας τῆς πατρικῆς κληρονομεῖν → it is right that children inherit their fathers' friendships just as they would their possessions
Latin > English (Lewis & Short)
ărithmētĭcus: a, um, adj., = ἀριθμητικός>,
I of or pertaining to arithmetic, arithmetical: ratio, Vitr. 10, 16.—Subst.: ărithmētĭca, ōrum, n., arithmetic: in arithmeticis satis exercitatus, Cic. Att. 14, 12 fin.>