The flux paradox was a problem in early warp engineering. It related to parameter sets needed to achieve scalar stabilization geometry integrity.
Henry Archer worked on the paradox under the supervision of Vulcan mentors, but made a breakthrough when he realized that his own mathematics might be as valid, or even more so, than the Vulcan derivation of the paradox. His mathematics were later described as elegant. (ENT: "Singularity")
This paradox was only mentioned in writing. It could be gleaned from a section from Henry Archer's biography.