necessary and sufficient condition
CONDITIONAL OR IMPLICATIONAL RELATIONSHIP BETWEEN TWO STATEMENTS: A NECESSARY CONDITION IS ONE WHICH MUST BE PRESENT IN ORDER FOR ANOTHER CONDITION TO OCCUR, WHILE A SUFFICIENT CONDITION IS ONE WHICH PRODUCES THE SAID CONDITION
Sufficient condition; Sufficient; Necessary and sufficient; Necessary condition; Suffice; Necessarily; Sufficient causes; Sufficient cause; Sufficient cause of the disease; Necessary and sufficient conditions; Necessary but not sufficient; Sufficient Condition; Sufficient and necessary conditions; Sufficient and necessary condition; Necessary & sufficient condition; Necessary and sufficient condition; Necessary cause; Necessity or sufficiency; Condition (philosophy)
notwendige und ausreichende Bedingung