Critical line
# Critical line

Critical line may refer to:

* In mathematics, a specific subset of the complex numbers asserted by the Riemann hypothesis to be the locus of all non-trivial zeroes of the Riemann zeta function
* Critical line theorem, a mathematical theorem saying that the proportion of nontrivial zeros of the Riemann zeta function lying on the critical line is greater than zero
* Critical line (thermodynamics), a higher-dimensional equivalent of a critical point
* Critical Line, an art exhibition
* Critical line method, a procedure in Portfolio optimization
