The existence and smoothness of the Navier-Stokes equations is one of theMillennium Prize Problems of the Clay Mathematics Institute. The problemasks whether, in three-dimensional incompressible fluids, given smoothinitial conditions, the Navier-Stokes equations always possess smoothsolutions, or whether singularities can develop in finite time. This paperprovides a mathematical answer to this problem within the axiom-theoremsystem of Constraint Network Dynamics. The Navier-Stokes equations are aneffective approximation of the Constraint Network discrete dynamical systemin the continuum limit; this approximation breaks down when the ConstraintNetwork undergoes an accretion phase transition. The formation of asingularity is not an intrinsic pathology of the physical system, but ratherthe boundary of applicability of the continuum hypothesis at the accretionphase transition. We prove: (1) the Constraint Network dynamical system iswell-posed for all initial conditions and admits no finite-time singularities;(2) the continuum hypothesis of the Navier-Stokes equations is logicallyincompatible with the accretion phase transition of the Constraint Network,and the equations necessarily break down before any singularity can form.Thus, the answer to the problem of smooth solutions of the Navier-Stokesequations is neither "global smooth solutions exist" nor "finite-timeblowup," but rather "the equations cease to be applicable before anysingularity can form."
Menggang Yu (Sat,) studied this question.
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