- B
- B-*-Algebra or B-*-algebra
- B-Line
- B-spline or B-Spline
- B-tree or B-Tree
- Baby Monster group or Baby monster group
- Babylonian numerals
- BAC-CAB Rule
- Bachet's conjecture
- Bachet's theorem
- Backgammon
- Backslash
- Backtracking
- Backward difference
- Bacon number
- Bad reduction
- Baer ring
- Bagging
- Baguenaudier
- Bailey-Borwein-Plouffe formula
- Baillie-PSW primality test
- Baire category theorem
- Baire classes
- Baire function
- Baire property
- Baire set
- Baire space
- Baire theorem
- Bairstow method
- Bairstow's method
- Baker's Dozen or Baker's dozen
- Baker's map
- Baker's method
- Baker-Campbell-Hausdorff formula
- Baker-Campbell-Hausdorff series
- Balance
- Balanced incomplete block design
- Balanced prime
- Balanced set
- Balanced tree
- Balian-Low theorem
- Ball
- Ball (mathematics)
- Ballantine
- Banach algebra
- Banach completion
- Banach fixed point theorem
- Banach function algebra
- Banach function space
- Banach limit
- Banach measure
- Banach space
- Banach-Alaoglu theorem
- Banach-Hausdorff-Tarski Paradox or Banach-Hausdorff-Tarski paradox
- Banach-Mazur game
- Banach-Steinhaus theorem or Banach-Steinhaus Theorem
- Banach-Tarski paradox or Banach-Tarski Paradox
- Banana Tree or Banana tree
- Band
- Bandwidth
- Banzhaf Power Index or Banzhaf power index
- Bar
- Bar Chart or Bar chart
- Bar graph
- Bar induction
- Barber paradox
- Barbier theorem
- Barbier's theorem
- Barker code
- Barker sequence
- Barnes G-function
- Barrel
- Barrel distortion
- Barrelled space
- Barrier
- Bartlett function
- Bartlett test
- Bartlett window
- Barycentric coordinates
- Barycentric subdivision
- Base
- Base (mathematics)
- Base (topology)
- Base change
- Base conversion
- Base curve
- Base field
- Base of the natural logarithm
- Base space
- Baseball
- Basel problem
- Basepoint
- BASIC or Basic
- Basin of attraction
- Basis
- Basis (linear algebra)
- Basis (topology)
- Basis element
- Basis point
- Basis theorem
- Bat
- Batch
- Bateman-Horn conjecture
- Baud
- Baud Rate or Baud rate
- Bauer-Fike Theorem or Bauer-Fike theorem
- Baumslag-Solitar group or Baumslag-solitar group
- Bayes formula
- Bayes' formula
- Bayes' Theorem or Bayes' theorem
- Bayesian analysis
- Bayesian estimator
- BBGKY hierarchy
- BBP Formula or BBP formula
- BBP-type formula
- BCG
- BCH code
- Bead-sort
- Beal conjecture
- Beal's conjecture
- Bean curve
- Bean machine
- Beast number or Number of the beast
- Beatty sequence
- Beatty's theorem
- Bee
- Beetle problem
- Behavior
- Behrens-Fisher problem
- Behrens-Fisher test
- Bell Curve or Bell curve
- Bell inequalities
- Bell number
- Bell numbers
- Bell polynomial
- Bell polynomials
- Bellhop paradox
- Bellman equation
- Bellman-Ford Algorithm or Bellman-Ford algorithm
- Bellows conjecture
- Belousov-Zhabotinskii reaction
- Beltrami-Klein model
- Bend
- Bend knot
- Benford law
- Benford's Law or Benford's law
- Ber
- Berge graph
- Bergman kernel
- Bergman kernel function
- Bergman metric
- Bergman space
- Bergman spaces
- Bergmann kernel
- Berlekamp-Massey algorithm
- Bernays-Gödel set theory
- Bernoulli differential equation
- Bernoulli distribution
- Bernoulli equation
- Bernoulli experiment
- Bernoulli function
- Bernoulli inequality
- Bernoulli number
- Bernoulli numbers
- Bernoulli polynomial
- Bernoulli polynomials
- Bernoulli scheme
- Bernoulli theorem
- Bernoulli Trial or Bernoulli trial
- Bernoulli trials
- Bernoulli's inequality
- Bernoulli's theorem
- Bernstein inequality
- Bernstein polynomial
- Bernstein polynomials
- Bernstein theorem
- Bernstein's inequality
- Bernstein's theorem
- Bernstein-Bézier curve
- Berry paradox
- Berry-Esseen inequality
- Berry-Esséen theorem
- Bertram Kostant
- Bertrand paradox
- Bertrand postulate
- Bertrand's conjecture
- Bertrand's Paradox or Bertrand's paradox
- Bertrand's postulate
- Bertrand's problem
- Bertrand's Theorem or Bertrand's theorem
- Bessel differential equation
- Bessel equation
- Bessel function
- Bessel function of the first kind
- Bessel function of the second kind
- Bessel function of the third kind
- Bessel functions
- Bessel inequality
- Bessel polynomial
- Bessel transform
- Bessel's equation
- Bessel's inequality
- Best linear unbiased estimator
- Beta
- Beta distribution or Beta Distribution
- Beta function
- Beta integral
- Beta prime distribution
- Beta-distribution
- Beta-function
- Beth number
- Bethe lattice
- Betti number
- Between
- Bezigon
- Bezout domain
- Bezout theorem
- Bezout's identity
- BGG resolution
- Bhattacharyya distance
- Bialgebra
- Bianchi group
- Bianchi identities
- Bianchi identity
- Bias
- Biased estimator
- Biaugmented pentagonal prism
- Biaugmented triangular prism
- Biaugmented truncated cube
- BIBD
- Bicategory
- Bicentered tree
- Bicentral tree
- Bicomplex
- Biconditional
- Biconjugate gradient method
- Biconnected component
- Biconnected graph
- Bicorn
- Bicupola
- Bicuspid curve
- Bicuspidal curve
- Bicyclic semi-group
- Bicyclic semigroup
- Bicylinder
- Bieberbach conjecture
- Bieberbach's conjecture
- Bienaymé-Chebyshev inequality
- Bifolium
- Bifurcation
- Bifurcation theory or Bifurcation Theory
- Big Dick or Big dick
- Big Oh or Big oh
- Big oh notation
- Big-O notation or Big-o notation
- Big-omega notation
- Big-Theta Notation or Big-theta notation
- Bigraph
- Bigyrate diminished rhombicosidodecahedron
- Biharmonic equation
- Biharmonic function
- Biharmonic operator
- Biholomorphic function
- Biholomorphic map
- Biholomorphic mapping
- Biholomorphic transformation
- Biholomorphically equivalent
- Bijection
- Bijective
- Bilaplacian
- Bilateral Laplace transform
- Bilateral symmetry
- Bilateral Z-transform or Bilateral z-transform
- Bilby
- Bilinear form
- Bilinear function
- Bilinear functional
- Bilinear map
- Bilinear mapping
- Billiards
- Billion
- Bilunabirotunda
- Bimagic cube
- Bimagic square
- Bimodal
- Bimodal distribution
- Bimodule
- Bimonster
- Bimorphism
- Bin
- Bin-packing problem
- Binary
- Binary Form or Binary form
- Binary Golay code
- Binary Goldbach conjecture
- Binary Gray code
- Binary heap
- Binary matrix
- Binary numeral system
- Binary operad
- Binary operation
- Binary operator
- Binary quadratic form
- Binary relation
- Binary search
- Binary search tree
- Binary splitting
- Binary tree or Binary Tree
- Binet's Fibonacci Number Formula or Binet's Fibonacci number formula or Binet's fibonacci number formula
- Binet-Cauchy identity
- Binomial
- Binomial coefficient
- Binomial coefficients
- Binomial distribution or Binomial Distribution
- Binomial expansion
- Binomial formula
- Binomial identity
- Binomial number
- Binomial series
- Binomial theorem or Binomial Theorem
- Binomial transform
- Binomial triangle
- Binormal
- Binormal vector
- Bioinformatics
- Biomathematics
- Biorthogonal system
- Biostatistics
- Biotic Potential or Biotic potential
- Bipartite graph
- Bipartite matching
- Bipolar coordinates
- Bipolar cylindrical coordinates
- Bipyramid
- Biquadratic equation
- Biquadratic field
- Biquaternion
- Birational geometry
- Birational mapping
- Birational morphism
- Birational transformation
- Birch and Swinnerton-Dyer conjecture
- Birch-Swinnerton-Dyer conjecture or Birch-swinnerton-dyer conjecture
- Birkhoff ergodic theorem
- Birkhoff's ergodic theorem
- Birkhoff's Theorem or Birkhoff's theorem
- Birkhoff-Khinchin ergodic theorem
- Birkhoff-Witt theorem
- Birkoff-von Neumann theorem
- Birotunda
- Birth-and-death process
- Birthday attack
- Birthday problem or Birthday Problem
- Bisection
- Bisector
- Bisectrix
- Bishop's inequality
- Bispherical coordinates
- Bit
- Bit complexity
- Bit rate
- Bitangent
- Bits Per Second or Bits per second
- Bitwise AND
- Bitwise NOT
- Bitwise OR
- Bitwise XOR
- Bivalent
- Bivariate distribution
- Bivariate normal distribution
- Bivector
- Black Dot Illusion
- Black model
- Black-Scholes formula
- Black-Scholes PDE
- Black-Scholes theory
- Blackboard bold
- Blackjack
- Blade
- Blaise Pascal or Blaise pascal
- Blancmange function
- Blaschke product
- Blaschke selection theorem
- Blattner conjecture
- Blivet
- Bloch sphere
- Bloch vector
- Bloch wave
- Bloch's theorem
- Block
- Block (graph theory)
- Block design
- BIBD
- Block diagonal matrix
- Block matrix
- Blotto games
- Blow-Up or Blow-up
- Blum's speed-up theorem
- BN-pair
- Board
- Board Game or Board game
- Boat
- Bochner integral
- Bochner's theorem
- Bode plot
- Bohm-Aharonov effect
- Bohr compactification
- Bohr-Mollerup theorem
- Boltzmann distribution
- Boltzmann equation
- Boltzmann statistics
- Bolyai-Gerwien theorem
- Bolzano theorem
- Bolzano's theorem
- Bolzano-Weierstrass Theorem or Bolzano-Weierstrass theorem
- Bombieri norm
- Bombieri's theorem
- Bombieri-Vinogradov theorem
- Bonferroni correction
- Bonferroni inequalities
- Bonferroni's inequalities
- Bonne projection
- Bonnet theorem
- Book of Numbers or Book of numbers
- Boole
- Boole inequality
- Boole's inequality
- Boolean
- Boolean algebra or Boolean Algebra
- Boolean arithmetic
- Boolean circuit
- Boolean equation
- Boolean function
- Boolean ring
- Boolean space
- Boolean valued model
- Boolean-valued model
- Booleans
- Boosting
- Bootstrap method
- Bootstrap methods
- Borcherds Lie algebra
- Bordism
- Borel Algebra or Borel algebra
- Borel Field
- Borel field of events
- Borel field of sets
- Borel function
- Borel group
- Borel lemma
- Borel measure
- Borel probability measure
- Borel set
- Borel sigma-algebra
- Borel space
- Borel subalgebra
- Borel subgroup
- Borel summation method
- Borel system of sets
- Borel transform
- Borel-Bott-Weil theorem
- Borel-Cantelli lemma or Borel-Cantelli Lemma
- Borel-Weil theorem
- Borel-Weyl theorem
- Bornological space
- Borromean link
- Borromean rings
- Borrow
- Borsuk's Conjecture or Borsuk's conjecture
- Borsuk-Ulam theorem or Borsuk-Ulam Theorem
- Boruvka's algorithm
- Bose-Einstein Distribution or Bose-Einstein distribution or Bose-einstein distribution
- Bose-Einstein statistics or Bose-einstein statistics
- Bott periodicity theorem
- Bottle Imp Paradox or Bottle imp paradox
- Bouligand dimension
- Bound
- Bound variable
- Bound vector
- Boundary
- Boundary (of a manifold)
- Boundary (topology)
- Boundary Conditions or Boundary conditions
- Boundary layer
- Boundary map
- Boundary operator
- Boundary point
- Boundary set
- Boundary value problem
- Bounded
- Bounded complete
- Bounded from above
- Bounded from below
- Bounded lattice
- Bounded operator
- Bounded set
- Bounded variation
- Boundedness theorem
- Boussinesq equation
- Boustrophedon transform
- Bovinum Problema
- Bow
- Bowditch curve
- Bowline hitch
- Bowling
- Box
- Box plot
- Box topology
- Box-and-whisker plot
- Box-counting dimension
- Box-Cox transformation
- Box-Muller transformation
- Boxcar function
- Boxcars
- Boy surface
- Bps
- Bra
- Brace
- Brachistochrone
- Brachistochrone Problem or Brachistochrone problem
- Bracket
- Bracket polynomial
- Bracketing
- Braess's paradox
- Brahmagupta identity
- Brahmagupta matrix
- Brahmagupta's formula
- Brahmagupta's problem
- Brahmagupta's Theorem or Brahmagupta's theorem
- Braid
- Braid group
- Braid theory
- Braid word
- Braided group
- Branch
- Branch and bound algorithm or Branch-and-bound algorithm
- Branch cut
- Branch line
- Branch point
- Branch-and-bound algorithm
- Branching process
- Brauer group
- Brauer's theorem
- Brauer's theorem on induced characters
- Brauer-Siegel theorem
- Bravais lattice
- Breadth-first traversal
- Breaking point
- Breeder
- Brent's method
- Bresenham's line algorithm
- Bretschneider's Formula or Bretschneider's formula
- Brian Conrad
- Brianchon theorem
- Brianchon's theorem
- Brick
- Bridge
- Bridge number
- Bridge of Königsberg
- Briggsian logarithm
- Brightness
- Brill-Noether theorem
- Broadcasting
- Brocard point
- Brocard points
- Brocard's conjecture
- Brocard's problem
- Bromwich integral
- Brother
- Brothers
- Brouwer fixed point theorem or Brouwer Fixed Point Theorem
- Brouwer theorem
- Brown Numbers or Brown numbers
- Brownian motion
- Broyden's Method or Broyden's method
- Bruck-Ryser Theorem or Bruck-Ryser theorem
- Bruck-Ryser-Chowla Theorem or Bruck-Ryser-Chowla theorem
- Bruhat decomposition
- Bruhat order
- Bruhat-Tits building
- Brun theorem
- Brun's constant
- Brun's constant for prime quadruplets
- Brun's theorem
- Brunn-Minkowski inequality or Brunn-minkowski inequality or Brunn-Minkowski Inequality
- Brunnian link
- Brute Force or Brute force
- Bryan Birch
- Bubble
- Bubble sort
- Buchberger algorithm
- Buchberger's Algorithm or Buchberger's algorithm
- Buckminster Fuller dome
- Buffon problem
- Buffon's needle
- Buffon's needle problem
- Buffon-Laplace needle problem
- Building
- Bullet nose
- Bump function
- Bundle
- Bundle map
- Bundle section
- Buniakowsky inequality
- Bunimovich stadium
- Bunyakovskii inequality
- Burali-Forti paradox or Burali-forti paradox
- Burgers' equation
- Burnside group
- Burnside lemma
- Burnside problem
- Burnside's Lemma or Burnside's lemma
- Burnside's theorem
- Bursting
- Busemann function
- Busy Beaver or Busy beaver
- Butterfly curve
- Butterfly Effect or Butterfly effect
- Butterfly graph
- Butterfly lemma
- Butterfly theorem or Butterfly Theorem
- BV function or Bv function
- Byte
- Byzantine generals problem
- Bäcklund transformation
- Bézier curve or Bézier Curve
- Bézier spline
- Bézier surface
- Bézout numbers
- Bézout's identity or Bezout's identity
- Bézout's theorem
- Bôcher equation
- Bôcher Prize
- Bôcher's theorem
