Unsolved Problems
Showing 1-12 of 12 problems
Category
Problem Set
Status
Hilbert's 12th Problem: Extension of Kronecker-Weber Theorem
Extend the Kronecker-Weber theorem on abelian extensions of the rationals to any base number field....
Hilbert's 16th Problem: Topology of Algebraic Curves and Limit Cycles
Determine the maximum number and relative positions of limit cycles for polynomial vector fields of degree $n$, and investigate the topology of real a...
Hilbert's 6th Problem: Axiomatization of Physics
Develop a mathematical framework that axiomatizes physics, particularly mechanics, thermodynamics, and probability theory....
Hilbert's 13th Problem: Seventh Degree Equations
Prove that the general equation of the seventh degree cannot be solved using functions of only two variables....
Hilbert's 7th Problem: Transcendence of Certain Numbers
If $\alpha$ is algebraic and irrational, and $\beta$ is algebraic and irrational, is $\alpha^\beta$ transcendental?...
Hilbert's 9th Problem: Reciprocity Laws
Generalize the reciprocity law of number theory to arbitrary number fields....
Hilbert's 11th Problem: Quadratic Forms over Algebraic Number Fields
Extend the theory of quadratic forms with algebraic numerical coefficients....
Hilbert's 14th Problem: Finite Generation of Rings
Is the ring of invariants of a linear algebraic group acting on a polynomial ring always finitely generated?...
Hilbert's 15th Problem: Schubert's Enumerative Calculus
Rigorously justify Schubert's enumerative geometry....
Hilbert's 17th Problem: Expression of Definite Forms
Can every non-negative rational function be expressed as a sum of squares of rational functions?...
Hilbert's 18th Problem: Polyhedra and Space-Filling
Are there only finitely many essentially different space-filling convex polyhedra? Is there a polyhedron which tiles space but not in a lattice arrang...
Navier-Stokes Existence and Smoothness
Do smooth solutions to Navier-Stokes equations exist globally in 3D? Or do finite-time singularities occur?...