The decree Haec sancta synodus ("This holy synod"), also called Haec sancta, was promulgated by the fifth session of the Council of Constance on April 6, 1415. It contains a section on the question of whether the Pope is above an ecumenical council or, conversely, such a council is above the Pope.[1] The question is related to papal primacy, papal supremacy and conciliarism.
The decree played an essential role in shaping conciliarism.[2]
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was invoked but never defined (see the help page).