ㄒㄩㄣˊㄏㄨㄢˊxúnhuánㄌㄨㄣˋㄓㄥˋlùnzhèng

循环论证
  1. 邏輯學推理論證過程前提A推出結論B,B前提證明A邏輯推理謬誤結論依據前提命題本身有待證明推論根本缺乏效力

circular argument, logical error consisting of begging the question, Latin: petitio principii
Pétition de principe
Zirkelschluss (Math)​