Wikipedia:WikiProject Mathematics/List of mathematics articles (U)

U-bit -- U-duality -- U-invariant -- U-quadratic distribution -- U-rank -- U-semigroup -- U-statistic -- UBC computer science -- Ubersketch -- UCL Faculty of Mathematical and Physical Sciences -- UCPH Department of Mathematical Sciences -- UCT Mathematics Competition -- Udo of Aachen -- Udwadia–Kalaba formulation -- Ugly duckling theorem -- UK Molecular R-matrix Codes -- Ulam matrix -- Ulam number -- Ulam spiral -- Ulam–Warburton automaton -- Ulam's conjecture -- Ulam's game -- Ulam's packing conjecture -- Ulm's theorem -- Ultimate tic-tac-toe -- Ultrabarrelled space -- Ultrabornological space -- Ultraconnected space -- Ultrafilter -- Ultrafilter (set theory) -- Ultrafinitism -- Ultragraph C*-algebra -- Ultrahyperbolic equation -- Ultralimit -- Ultrametric space -- Ultraparallel theorem -- Ultrapolynomial -- Ultraproduct -- Ultrastrong topology -- Ultraweak topology --

Umbilic torus -- Umbilical point -- Umbral calculus -- Umbral moonshine -- Umbrella sampling -- Unary coding -- Unary function -- Unary language -- Unary numeral system -- Unary operation -- Unavoidable pattern -- Unbiased estimation of standard deviation -- Unbounded operator -- Uncertain data -- Uncertainty -- Uncertainty analysis -- Uncertainty budget -- Uncertainty coefficient -- Uncertainty exponent -- Uncertainty parameter -- Uncertainty principle -- Uncertainty quantification -- Uncertainty theory -- Uncle Petros and Goldbach's Conjecture -- Uncomfortable science -- Unconditional convergence -- Uncorrelated asymmetry -- Uncorrelatedness (probability theory) -- Uncountable set -- Undecidable -- Undecidable problem -- Undecimal -- Undefined (mathematics) -- Under-fitting -- Underdetermined system -- Underfitting -- Undergraduate Texts in Mathematics -- Undulating number -- Unduloid --

Unexpected hanging paradox -- Unfoldable cardinal -- Unfolding -- Unfolding (functions) -- Unfriendly partition -- Ungula -- Unibranch local ring -- Unicity conjecture -- Unicoherent space -- Unicursal hexagram -- Unification -- Unification (computer science) -- Unified CORDIC -- Uniform 1 k2 polytope -- Uniform 10-polytope -- Uniform 2 k1 polytope -- Uniform 4-polytope -- Uniform 5-polytope -- Uniform 6-polytope -- Uniform 7-polytope -- Uniform 8-polytope -- Uniform 9-polytope -- Uniform absolute-convergence -- Uniform algebra -- Uniform antiprismatic prism -- Uniform boundedness -- Uniform boundedness conjecture for rational points -- Uniform boundedness principle -- Uniform coloring -- Uniform continuity -- Uniform convergence -- Uniform convergence in probability -- Uniform field theory -- Uniform honeycomb -- Uniform honeycombs in hyperbolic space -- Uniform integrability -- Uniform isomorphism -- Uniform k 21 polytope -- Uniform limit theorem -- Uniform matroid -- Uniform module -- Uniform norm -- Uniform polyhedron -- Uniform polyhedron compound -- Uniform polytope -- Uniform price auction -- Uniform property -- Uniform space -- Uniform star polyhedron -- Uniform tessellation -- Uniform theory of diffraction -- Uniform tiling -- Uniform tiling symmetry mutations -- Uniform tilings in hyperbolic plane -- Uniform tree -- Uniformity conjecture -- Uniformizable space -- Uniformization -- Uniformization (probability theory) -- Uniformization (set theory) -- Uniformization theorem -- Uniformly bounded representation -- Uniformly Cauchy sequence -- Uniformly connected space -- Uniformly convex space -- Uniformly disconnected space -- Uniformly distributed measure -- Uniformly hyperfinite algebra -- Uniformly most powerful test -- Uniformly smooth space -- Unifying theories in mathematics -- Unimodality -- Unimodular -- Unimodular lattice -- Unimodular matrix -- Unimodular polynomial matrix -- Union (set theory) -- Union-closed sets conjecture -- Union of Czech mathematicians and physicists -- Unipotent -- Unipotent representation -- Unique factorization domain -- Unique games conjecture -- Unique negative dimension -- Unique sink orientation -- Uniquely colorable graph -- Uniqueness case -- Uniqueness quantification -- Uniqueness theorem -- Uniqueness theorem for Poisson's equation -- Unirationality -- Unisolvent functions -- Unisolvent point set -- Unistochastic matrix -- Unit (ring theory) -- Unit angle -- Unit ball -- Unit circle -- Unit commitment problem in electrical power production -- Unit cube -- Unit disk -- Unit disk graph -- Unit distance graph -- Unit doublet -- Unit fraction -- Unit function -- Unit hyperbola -- Unit impulse -- Unit interval -- Unit measure -- Unit propagation -- Unit root -- Unit root test -- Unit sphere -- Unit square -- Unit tangent bundle -- Unit vector -- Unit-weighted regression -- Unital (geometry) -- Unital map -- Unitarian trick -- Unitary divisor -- Unitary element -- Unitary equivalence -- Unitary group -- Unitary matrix -- Unitary method -- Unitary operator -- Unitary perfect number -- Unitary representation -- Unitary transformation -- United Kingdom Mathematics Trust -- United States of America Mathematical Olympiad -- United States of America Mathematical Talent Search -- Units conversion by factor-label -- Unity -- Unity amplitude -- Univalent function -- Univariate -- Univariate (statistics) -- Univariate analysis -- Univariate distribution -- Universal algebra -- Universal algebraic geometry -- Universal approximation theorem -- Universal bundle -- Universal C*-algebra -- Universal chord theorem -- Universal coefficient theorem -- Universal composability -- Universal differential equation -- Universal embedding theorem -- Universal enveloping algebra -- Universal generalization -- Universal geometric algebra -- Universal graph -- Universal hashing -- Universal homeomorphism -- Universal instantiation -- Universal parabolic constant -- Universal property -- Universal quadratic form -- Universal quantification -- Universal representation (C*-algebra) -- Universal set -- Universal set (disambiguation) -- Universal space -- Universal Teichmüller space -- Universal vertex -- Universality (dynamical systems) -- Universality probability -- Universally Baire set -- Universally measurable set -- Universe (mathematics) -- University of Chicago School Mathematics Project -- University of Minnesota Talented Youth Mathematics Program -- University of Sydney School of Mathematics and Statistics -- University of Toronto Department of Mathematics -- University of Waterloo Faculty of Mathematics --

Unknot -- Unknotting -- Unknotting number -- Unknotting problem -- Unknown Soldier Memorial (Cairo) -- Unknown unknown -- Unlink -- Unmatched count -- Unnormalized modified KdV equation -- Unordered pair -- Unramified morphism -- Unreasonable ineffectiveness of mathematics -- Unrestricted algorithm -- Unrooted binary tree -- Unsatisfiable core -- Unscented optimal control -- Unseen species problem -- Unsolved Problems in Number Theory -- Unstructured grid -- Untouchable number -- Untyped lambda calculus -- Unusual number -- UP (complexity) -- Up tack -- Up to -- Uplift modelling -- Upper and lower bounds -- Upper and lower probabilities -- Upper bound theorem -- Upper-convected time derivative -- Upper half-plane -- Upper p-series -- Upper set -- Upper topology --

Upwind differencing scheme for convection -- Upwind scheme -- Urania Propitia -- Uranium tile -- Urelement -- Urn problem -- Urquhart graph -- Ursell function -- Urysohn and completely Hausdorff spaces -- Urysohn universal space -- Urysohn's lemma -- Uses of trigonometry -- Ushiki's theorem -- Using the Borsuk–Ulam Theorem -- Usual hypotheses -- Utilitarian rule -- Utility functions on indivisible goods -- Utility graph -- Utility maximization problem -- Utilization -- Utilization distribution -- UTM theorem -- Utpala -- Utpala (astronomer) -- UV fixed point -- Uzawa iteration -- Uzumaki --