to inform, to teach, to instruct / to tell

mathematics (field of study)

he / distal demonstrative, something far off removed from both speaker and listener: that / boyfriend

distal demonstrative, something far off removed from both speaker and listener: that, yon / particularly, male personal third person pronoun: he / by extension from he: boyfriend

he; boyfriend

teachings, doctrine, lesson

専用: the exclusive use, dedicated

占断: decision by divination; complete possession or occupation / 専断, 擅断: an arbitrary decision

遷都: relocate of the capital

セント: cent / 遷都: relocation of the capital