List of mathematics articles

R

R. A. Fisher Lectureship -- Rabdology -- Rabin automaton -- Rabin signature algorithm -- Rabinovich-Fabrikant equations -- Rabinowitsch trick -- Racah polynomials -- Racah W-coefficient -- Racetrack (game) -- Racetrack principle -- Racks and quandles -- Radar chart -- Rademacher complexity -- Rademacher distribution -- Rademacher's theorem -- Rader's FFT algorithm -- Radial basis function -- Radial basis function network -- Radial distance (geometry) -- Radial line -- Radian -- Radiative flux -- Radical axis -- Radical of a Lie algebra -- Radical of a module -- Radical of a ring -- Radical of an algebraic group -- Radical of an ideal -- Radical of an integer -- Radical polynomial -- Radicial morphism -- Radio navigation -- Radius -- Radius (graph theory) -- Radius of convergence -- Radius of curvature -- Radius of curvature (applications) -- Radius of curvature (mathematics) -- Radius of gyration -- Radix -- Radix economy -- Radix point -- Rado graph -- Rado's theorem -- Rado's theorem (Ramsey theory) -- Radon measure -- Radon–Nikodym theorem -- Radon–Riesz property -- Radon space -- Radon transform -- Radon's theorem -- Radonifying function --

Rag

Ragsdale conjecture -- Raised cosine distribution -- Raising and lowering indices -- Ramanujam vanishing theorem -- Ramanujan graph -- Ramanujan–Nagell equation -- Ramanujan–Petersson conjecture -- Ramanujan prime -- Ramanujan–Soldner constant -- Ramanujan summation -- Ramanujan theta function -- Ramanujan's congruences -- Ramanujan's lost notebook -- Ramanujan's sum -- Ramer-Douglas-Peucker algorithm -- Ramification -- Ramified forcing -- Ramism -- Ramp function -- Ramsey cardinal -- Ramsey RESET test -- Ramsey theory -- Ramsey's theorem -- Rand index -- Randić’s molecular connectivity index -- Random coil -- Random compact set -- Random dynamical system -- Random effects estimation -- Random effects model -- Random element -- Random field -- Random forest -- Random geometric graph -- Random graph -- Random matrix -- Random measure -- Random minimal spanning tree -- Random multinomial logit -- Random naive Bayes -- Random number -- Random optimization -- Random permutation -- Random permutation statistics -- Random regular graph -- Random sample -- Random sequence -- Random tree -- Random variable -- Random variate -- Random walk -- Random walk hypothesis -- Randomization -- Randomized response -- Randomness -- Randomness tests -- Range (mathematics) -- Range (statistics) -- Range searching -- Ranger beads -- Rank (differential topology) -- Rank (graph theory) -- Rank (linear algebra) -- Rank correlation -- Rank factorization -- Rank filter -- Rank-into-rank -- Rank–nullity theorem -- Rank of a group -- Rank of an abelian group -- Rank product -- Rank-size distribution -- Ranked poset -- Rankine-Hugoniot equation -- Rankine's method -- Ranking -- Rankit -- Ranklet -- RANSAC --

Rao

Rao–Blackwell theorem -- Raptor code -- Rarita–Schwinger equation -- Rasch model -- Rasch model estimation -- Rasiowa–Sikorski lemma -- Rata Die -- Rate distortion theory -- Rate function -- Rate of convergence -- Ratio -- Ratio distribution -- Ratio test -- Rational consequence relation -- Rational dependence -- Rational function -- Rational homotopy theory -- Rational mapping -- Rational normal curve -- Rational number -- Rational point -- Rational quadratic covariance function -- Rational representation -- Rational root theorem -- Rational sieve -- Rational singularity -- Rational surface -- Rational trigonometry -- Rational variety -- Rational zeta series -- Rationalisation (mathematics) -- Ratner's theorems --

Rau

Rauch comparison theorem -- Raven paradox -- Raw score -- Ray transfer matrix analysis -- Rayleigh distribution -- Rayleigh quotient -- Rayleigh quotient iteration -- Rayleigh–Ritz method -- Raynaud surface -- Reachability -- Reaction–diffusion system -- Reactive search optimization -- Real algebraic geometry -- Real analysis -- Real analytic Eisenstein series -- Real closed field -- Real computation -- Real curve -- Real form (Lie theory) -- Real line -- Real number -- Real part -- Real point -- Real projective line -- Real projective plane -- Real projective space -- Real representation -- Real structure -- Real tree -- Real-valued function -- Realcompact space -- Reality structure -- Realizability -- Realization (probability) -- Realization (systems) -- Rearrangement inequality -- Reassignment method --

Rec

Recall bias -- Receiver operating characteristic -- Reciprocal difference -- Reciprocal Fibonacci constant -- Reciprocal Gamma function -- Reciprocal lattice -- Reciprocal polynomial -- Reciprocal rule -- Reciprocating oscillation -- Reciprocation -- Reciprocity (engineering) -- Reciprocity (mathematics) -- Reciprocity (projective geometry) -- Reconstruction conjecture -- Record linkage -- Recreational mathematics -- Rectangle -- Rectangle method -- Rectangular elastica -- Rectangular function -- Rectifiable set -- Rectification (geometry) -- Rectified 120-cell -- Rectified 24-cell -- Rectified 5-cell -- Rectified 600-cell -- Rectified 8-cell -- Rectified cubic honeycomb -- Rectified hexateron -- Rectilinear polygon -- Recurrence period density entropy -- Recurrence plot -- Recurrence quantification analysis -- Recurrence relation -- Recurrent point -- Recursion -- Recursion (computer science) -- Recursionism -- Recursive Bayesian estimation -- Recursive definition -- Recursive function -- Recursive indexing -- Recursive language -- Recursive languages and sets -- Recursive ordinal -- Recursive partitioning -- Recursive set -- Recursive tree -- Recursively enumerable language -- Recursively enumerable set --

Red

Red auxiliary numbers -- Red-black tree -- Redescending M-estimator -- Redheffer matrix -- Redmond–Sun conjecture -- Reduced cost -- Reduced derivative -- Reduced homology -- Reduced product -- Reduced residue system -- Reduced ring -- Reduct -- Reductio ad absurdum -- Reduction -- Reduction (mathematics) -- Reduction (recursion theory) -- Reduction of order -- Reduction of the structure group -- Reduction strategy -- Reductive dual pair -- Reductive group -- Redundancy (information theory) -- Redundant binary representation -- Reeb foliation -- Reeb graph -- Reed–Muller code -- Reed-Muller expansion -- Reeh–Schlieder theorem -- Rees factor semigroup -- Reeve tetrahedron --

Ref

Refactorable number -- Reference class forecasting -- Reference class problem -- Refinable function -- Refinement calculus -- Refinement monoid -- Reflecting cardinal -- Reflection (linear algebra) -- Reflection (mathematics) -- Reflection formula -- Reflection group -- Reflection principle -- Reflection symmetry -- Reflection theorem -- Reflection through the origin -- Reflective subcategory -- Reflexive closure -- Reflexive operator algebra -- Reflexive relation -- Reflexive space -- Reflexive transitive closure -- Reflexive transitive symmetric closure -- Reform mathematics -- Regiomontanus' angle maximization problem -- Regional Mathematical Olympiad -- Register machine -- Regression analysis -- Regression Analysis of Time Series -- Regression dilution -- Regression discontinuity -- Regression fallacy -- Regression toward the mean -- Regular 4-polytope -- Regular cardinal -- Regular category -- Regular chain -- Regular conditional probability -- Regular Division of the Plane -- Regular function -- Regular grammar -- Regular graph -- Regular grid -- Regular Hadamard matrix -- Regular homotopy -- Regular ideal -- Regular isotopy -- Regular local ring -- Regular map -- Regular map (algebraic geometry) -- Regular map (graph theory) -- Regular matrix -- Regular measure -- Regular number -- Regular p-group -- Regular paperfolding sequence -- Regular part -- Regular polygon -- Regular polyhedron -- Regular polytope -- Regular Polytopes (book) -- Regular prime -- Regular representation -- Regular ring -- Regular semigroup -- Regular sequence (algebra) -- Regular singular point -- Regular skew polyhedron -- Regular space -- Regularity theorem for Lebesgue measure -- Regularization (mathematics) -- Regularization (physics) -- Regularized Gamma function -- Regulated function -- Regulated integral -- Regulator --

Rei

Reidemeister move -- Reider's theorem -- Reification (statistics) -- Reinforcement learning -- Reinhardt cardinal -- Reinhardt domain -- Reisner Papyrus -- Rejecta Mathematica -- Rejection sampling -- Related rates -- Relation algebra -- Relation composition -- Relation construction -- Relation reduction -- Relational algebra -- Relational calculus -- Relational model -- Relations between Fourier transforms and Fourier series -- Relationships among probability distributions -- Relativator -- Relative canonical model -- Relative contact homology -- Relative difference -- Relative dimension -- Relative homology -- Relative interior -- Relative neighborhood graph -- Relative risk -- Relative standard deviation -- Relative tensor product -- Relative term -- Relatively compact subspace -- Relatively hyperbolic group -- Relativistic Breit–Wigner distribution -- Relativistic heat conduction -- Relaxation method -- Relaxation technique (mathematics) -- Relevance logic -- Reliability (statistics) -- Reliability theory -- Rellich-Kondrachov theorem --

Rem

Remainder -- Remarkable cardinal -- Remez algorithm -- Remez inequality -- Removable singularity -- Rencontres numbers -- Rendezvous problem -- Renewal theory -- Renormalization group -- Rényi entropy -- Repdigit -- Repeated measures design -- Repeating decimal -- Replication (statistics) -- Replicator equation -- Reports on Mathematical Physics -- Representable functor -- Representation of a Lie group -- Representation of a Lie superalgebra -- Representation rigid group -- Representation ring -- Representation theorem -- Representation theory -- Representation theory of diffeomorphism groups -- Representation theory of finite groups -- Representation theory of Hopf algebras -- Representation theory of SL2(R) -- Representation theory of SU(2) -- Representation theory of the Galilean group -- Representation theory of the Lorentz group -- Representation theory of the Poincaré group -- Representation theory of the symmetric group -- Representation validity -- Representations of e -- Representative function -- Reproducing kernel Hilbert space -- Reptation Monte Carlo -- Repulsive particle swarm optimization -- Repunit -- Repunit prime --

Res

Resampling (bitmap) -- Resampling (statistics) -- Rescaled range -- Research Institute for Mathematical Sciences -- Research Students Conference Probability and Statistics -- Research subject -- Residual (mathematics) -- Residual (numerical analysis) -- Residual property -- Residual property (mathematics) -- Residual sum of squares -- Residual topology -- Residual variance -- Residually finite group -- Residuated Boolean algebra -- Residuated lattice -- Residuated mapping -- Residue (complex analysis) -- Residue class-wise affine group -- Residue field -- Residue number system -- Residue theorem -- Resistance distance -- Resistive ballooning mode -- Resolution (algebra) -- Resolution (logic) -- Resolution (mathematics) -- Resolution of singularities -- Resolvable space -- Resolvent formalism -- Resolvent set -- Resonance -- Resource bounded measure -- Response bias -- Response rate -- Response surface methodology -- Restricted isometry property -- Restricted Lie algebra -- Restricted maximum likelihood -- Restricted partial quotients -- Restricted product -- Restricted randomization -- Restricted representation -- Restricted sumset -- Restriction (mathematics) -- Restriction of scalars -- Resultant --

Ret

Rethinking Mathematics -- Retract (group theory) -- Return period -- Reuleaux tetrahedron -- Reuleaux triangle -- Reverse-delete algorithm -- Reverse mathematics -- Reverse Monte Carlo -- Reverse perspective -- Reverse Polish notation -- Reversible diffusion -- Reversible dynamics -- Reversible jump -- Revolutions in Mathematics -- REVSTAT -- Rewriting -- Reynolds stresses -- Rhind Mathematical Papyrus -- Rhind Mathematical Papyrus 2/n table -- Rho calculus -- Rhode Island Math League -- Rhombic dodecahedral honeycomb -- Rhombic dodecahedron -- Rhombic enneacontahedron -- Rhombic icosahedron -- Rhombic triacontahedron -- Rhombicosacron -- Rhombicosahedron -- Rhombicosidodecahedron -- Rhombicuboctahedron -- Rhombidodecadodecahedron -- Rhombille tiling -- Rhombitriangular-hexagonal prismatic honeycomb -- Rhombitriheptagonal tiling -- Rhombitrihexagonal tiling -- Rhombo-hexagonal dodecahedron -- Rhombohedron -- Rhomboid -- Rhombus --

Rhu

Rhumb line -- Ribbon Hopf algebra -- Ribbon knot -- Ribet's theorem -- Riccati equation -- Ricci curvature -- Ricci decomposition -- Ricci-flat manifold -- Ricci flow -- Rice distribution -- Rice–Shapiro theorem -- Rice's theorem -- Richard Rusczyk -- Richard's paradox -- Richards equation -- Richardson Chair of Applied Mathematics -- Richardson extrapolation -- Richardson-Lucy deconvolution -- Richardson's theorem -- Ridders' method -- Ridge (differential geometry) -- Ridge (geometry) -- Ridge detection -- Riemann curvature tensor -- Riemann form -- Riemann–Hilbert correspondence -- Riemann–Hilbert problem -- Riemann–Hurwitz formula -- Riemann hypothesis -- Riemann integral -- Riemann–Lebesgue lemma -- Riemann–Liouville integral -- Riemann mapping theorem -- Riemann problem -- Riemann–Roch theorem -- Riemann–Roch theorem for smooth manifolds -- Riemann–Roch theorem for surfaces -- Riemann series theorem -- Riemann–Siegel formula -- Riemann–Siegel theta function -- Riemann solver -- Riemann sphere -- Riemann–Stieltjes integral -- Riemann sum -- Riemann surface -- Riemann tensor (general relativity) -- Riemann–von Mangoldt formula -- Riemann Xi function -- Riemann zeta function -- Riemann's differential equation -- Riemannian circle -- Riemannian connection on a surface -- Riemannian geometry -- Riemannian manifold -- Riemannian Penrose inequality -- Riemannian submanifold -- Riemannian submersion -- Riesel number -- Riesz–Fischer theorem -- Riesz function -- Riesz mean -- Riesz potential -- Riesz representation theorem -- Riesz sequence -- Riesz space -- Riesz theorem -- Riesz–Thorin theorem -- Riesz transform -- Riesz's lemma --

Rig

Rigged Hilbert space -- Right angle -- Right conoid -- Right half-plane -- Right inverse -- Right prime -- Right quotient -- Right triangle -- Right-truncatable prime -- Rigid analytic space -- Rigid body -- Rigid body dynamics -- Rigid origami -- Rigidity (mathematics) -- Rijndael mix columns -- Rijndael S-box -- Ring (mathematics) -- Ring extension -- Ring homomorphism -- Ring of integers -- Ring of sets -- Ring of symmetric functions -- Ring spectrum (homotopy theory) -- Ring theory -- Ringed space -- Ringel–Hall algebra -- Rippling -- Risch algorithm -- Rising sun lemma -- Risk function -- Risk-neutral measure -- Risk perception -- Risk theory --

Rit

Rithmomachy -- Ritz method -- Rng (algebra) -- Road coloring problem -- ROAM -- Robbins algebra -- Robbins constant -- Robbins lemma -- Robbins pentagon -- Robbins theorem -- Robbins' problem (of optimal stopping) -- Robert Parris Moses -- Robertson graph -- Robertson–Seymour theorem -- Robin boundary condition -- Robin Hood index -- Robinson algorithm -- Robinson arithmetic -- Robinson–Schensted algorithm -- Robinson's joint consistency theorem -- Robust measures of scale -- Robust optimization -- Robust regression -- Robust statistics -- Robustification -- Rocket City Math League -- Rod (geometry) -- Rod calculus -- Rodrigues' formula -- Rodrigues' rotation formula --

Roe

Roe solver -- Rogers–Ramanujan continued fraction -- Rogers–Ramanujan identities -- Rokhlin's theorem -- Rolf Schock Prizes -- Rolle's theorem -- Rollo Davidson Prize -- Romaka Siddhanta -- Roman abacus -- Roman arithmetic -- Roman letters used in mathematics -- Roman numerals -- Roman surface -- Romanian numbers -- Romberg's method -- Roof pitch -- Rook polynomial -- Rook's graph -- Room square -- Root (mathematics) -- Root datum -- Root-finding algorithm -- Root group -- Root locus -- Root mean square -- Root mean square deviation -- Root mean square deviation (bioinformatics) -- Root mean square fluctuation -- Root of a function -- Root of unity -- Root system -- Root test -- Rooted graph -- Rooted product of graphs --

Rop

Ropelength -- Rose (mathematics) -- Rose (topology) -- Rosenbrock function -- Rosenbrock methods -- Rosser's theorem -- Rosser's trick -- Rössler attractor -- Rota–Baxter algebra -- Rotary reciprocation -- Rotating calipers -- Rotation -- Rotation (mathematics) -- Rotation around a fixed axis -- Rotation group -- Rotation matrix -- Rotation number -- Rotation of axes -- Rotation operator -- Rotation operator (vector space) -- Rotation representation (mathematics) -- Rotation system -- Rotational invariance -- Rotational–vibrational coupling -- Roth's theorem -- Rothamsted Experimental Station -- Rothe-Hagen identity -- Rotor (mathematics) -- Rouché's theorem -- Rough number -- Rough set -- Roulette (curve) -- Round function -- Round number -- Round-off error -- Round robin test -- Rounding -- Rouse Ball Professor of Mathematics -- Route inspection problem -- Routh–Hurwitz stability criterion -- Routh–Hurwitz theorem -- Routh's theorem --

Row

Row and column spaces -- Row echelon form -- Row equivalence -- Row space -- Row vector -- Rowbottom cardinal -- Royal Statistical Society -- Rprop -- RSA -- RSA-100 -- RSA-1024 -- RSA-110 -- RSA-120 -- RSA-129 -- RSA-130 -- RSA-140 -- RSA-150 -- RSA-1536 -- RSA-155 -- RSA-160 -- RSA-170 -- RSA-180 -- RSA-190 -- RSA-200 -- RSA-2048 -- RSA-210 -- RSA-220 -- RSA-230 -- RSA-232 -- RSA-240 -- RSA-250 -- RSA-260 -- RSA-270 -- RSA-280 -- RSA-290 -- RSA-300 -- RSA-309 -- RSA-310 -- RSA-320 -- RSA-330 -- RSA-340 -- RSA-350 -- RSA-360 -- RSA-370 -- RSA-380 -- RSA-390 -- RSA-400 -- RSA-420 -- RSA-430 -- RSA-440 -- RSA-450 -- RSA-460 -- RSA-470 -- RSA-480 -- RSA-490 -- RSA-500 -- RSA-576 -- RSA-617 -- RSA-640 -- RSA-704 -- RSA-768 -- RSA-896 -- RSA Factoring Challenge -- RSA numbers --

Rtc

RTCP hierarchical aggregation -- Rubik's Cube -- Rubik's Cube group -- Rubik's Revenge -- Rubin Causal Model -- Rudin–Shapiro sequence -- Rudvalis group -- Ruffini's rule -- Ruin theory -- Rule of 72 -- Rule of inference -- Rule of nines (mathematics) -- Rule of product -- Rule of Sarrus -- Rule of succession -- Rule of sum -- Ruled surface -- Ruled variety -- Ruler -- Rules for the Direction of the Mind -- Rules of passage (logic) -- Run-length encoding -- Runcinated 120-cell -- Runcinated 24-cell -- Runcinated alternated cubic honeycomb -- Runcinated pentachoron -- Runcinated tesseract -- Runcination -- Runcitruncated 120-cell -- Runcitruncated 16-cell -- Runcitruncated 24-cell -- Runcitruncated 5-cell -- Runcitruncated 600-cell -- Runcitruncated cubic honeycomb -- Runcitruncated tesseract -- Runge–Kutta–Fehlberg method -- Runge–Kutta method (SDE) -- Runge–Kutta methods -- Runge's phenomenon -- Runge's theorem -- Running total --

Rup

Ruppeiner geometry -- Ruppert's algorithm -- Rupture field -- Russell's paradox -- Russo–Dye theorem -- Russo–Vallois integral -- Ruth–Aaron pair -- Ruziewicz problem -- RV coefficient -- Rvachev function -- Ryll-Nardzewski fixed point theorem --