I´m here because I have seen in my exercising book this expression: ἐπ’ αὐτοῑς
Ι wonder by one hand on the meaning, -which seems to me an expression like ἐπί τούτοις-. on the other hand, what really makes me confuse is this: why it’s not written ἔφ’ αὐτοῑς ?
what I would like to know is what are the rules to write one and no the other version, Why Holtermann wrote ἐπ’ αὐτοῑς .