De Administrando Imperio
De Imperio administrando the Latin title of a signature of the Byzantine emperor Constantine VII (medium Greek Πρὸς τὸν ἴδιον υἱὸν Ρωμανόν ).
Constantine was a scholar, who produced a variety of fonts. The De administrando Imperio mentioned work he wrote 948-952, as a political guide for his son and successor Romanos II The font contains out advice like the Empire and attacks to be attacked by enemies. The work combines two earlier works of Constantine, the Peri Ethnon in which the history and people of the surrounding the Byzantine Empire countries are described and the Peri Thematon, which concerned the events in the provinces of the empire. To this combination nor the political advice of Constantine came to his son.
The work contains descriptions of the Pechenegs, Kievan Rus, Hungarians, Bulgarians, Crimean Tatars, Khazars, and in the north; the Arabs in the east and south and the territory to Spain; and the Teutons, Lombards, Venetians, Croats, Serbs, and Moravians in the West. In addition to historical and geographical information, Constantine had introduced some advice about how countries tampered with and against each other can be played without the Byzantine Empire they had to attack directly. It also contains information about diplomatic events in the provinces of the empire such as Armenia, Iberia, Cyprus and Peloponnese.
The writing was not intended for the public, as it contained many state secrets, but only for the training of Romanos.
The earliest extant copies were made for Ioannes Ducas, brother of Constantine X., in the late 11th century. Two out of three complete copies are in the French National Library in Paris, and the third received in the Vatican Library. An incomplete copy is available in Modena. The writing was first published in 1611 by Johannes van Meurs, who gave their today's Latin name. Constantine himself had given her a name.