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__NOTOC__ A ''rationalis'' was a high-ranking fiscal officer in the Roman Empire. Until replaced by the ''comes sacrarum largitionum'' by Emperor Constantine in the early 4th century, the ''rationalis summarum'' – comparable to a modern-day finance minister – was one of two state officials who had authority over the imperial treasury, the other one being the ''rationalis rei privatae'' (manager of imperial estates and city properties). Examples for tasks that were performed by a ''rationalis'' are "the collection of all normal taxes and duties, the control of currency and the administration of mines and mints". Each province also had various classes of ''rationales'', and Emperor Diocletian's administrative reforms had mirrored the dual structure on the diocesis–level, instituting the local positions ''rationalis summarum'' and ''magister rei privatae'' above the ''procuratores''. The former continued to exist after the reforms, one example are the ''comes et rationalis summarum Aegypti''. In the 6th century, the post was increasingly rendered into its Greek equivalent, ''logothetes'', which later was given to the senior fiscal secretaries of the middle Byzantine Empire (7th–12th centuries). == See also == * Aerarium * Congiarium * fiscus * rationibus * Roman finance 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「rationalis」の詳細全文を読む スポンサード リンク
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