What was riemanns negation?

Riemann's negation refers to the idea that the Riemann Hypothesis, which posits that all non-trivial zeros of the Riemann zeta function lie on the critical line, could be false. If proven false, it would imply the existence of at least one non-trivial zero not located on this line, challenging many established results in number theory and the distribution of prime numbers. The hypothesis remains one of the most important and unresolved problems in mathematics.