# New in *MathWorld* -- November
2004

### Tuesday November 30, 2004

- Casus Irreducibilis (modified)
- Central Circle (modified)
- Conway Circle (modified)
- de Longchamps Circle
- E_n-Function (modified)
- Erf (modified)
- Erfc (modified)
- Extouch Triangle (modified)
- Morley's Theorem (modified)
- Power Circles

### Monday November 29, 2004

- Ajima-Malfatti Points (modified)
- Conway Circle (modified)
- Gallatly Circle (modified)
- Mandart Circle (modified)
- Nine-Point Circle (modified)
- Rayleigh Distribution (modified)
- Stevanović Circle (modified)
- Tangential Circle (modified)
- Trilinear Coordinates (modified)

### Sunday November 28, 2004

- Busy Beaver (modified)
- Central Circle (modified)
- Dihedral Group D_6 (modified)
- Dou Circle (modified)
- Erf (modified)
- Exsimilicenter
- Hexagonal Square Number (modified)
- Hexagon Tiling (modified)
- Insimilicenter
- Lattice Sum (modified)
- Left Factorial
- Parallel Lines (modified)
- Perpendicular (modified)
- Trisected Perimeter Point (modified)
- van Lamoen Circle (modified)

### Saturday November 27, 2004

- Ajima-Malfatti Points (modified)
- Crossdifference
- Equilateral Cevian Triangle Point
- External Similitude Center (modified)
- Factorial (modified)
- Internal Similitude Center (modified)
- Malfatti's Problem (modified)

### Friday November 26, 2004

- Brocard Circle (modified)
- Central Circle (modified)
- Equi-Brocard Center (modified)
- First Brocard Circle
- Second Brocard Circle
- Trisected Perimeter Point (modified)

### Tuesday November 23, 2004

- Apollonius Circle (modified)
- Bevan Circle (modified)
- Central Circle (modified)
- Circumcircle (modified)
- Excentral Circle
- Feigenbaum Constant Approximations (modified)
- Integer Part (modified)
- Lester Circle (modified)
- Nine-Point Circle (modified)
- Orthocentroidal Circle (modified)
- Orthogonal Circles (modified)
- Parry Circle (modified)
- Pi Approximations (modified)
- Polar Circle (modified)
- Tangential Circle (modified)
- Totient Function (modified)

### Monday November 22, 2004

- Algebraic Group
- Brocard Inellipse (modified)
- Central Line (modified)
- Conway Circle
- Cosine Circle (modified)
- de Longchamps Ellipse (modified)
- Dou Circle
- Droz-Farny Circles (modified)
- Fagnano's Inequality
- Fermat Axis
- First Droz-Farny Circle (modified)
- First Lemoine Circle (modified)
- Gallatly Circle
- Mandart Circle
- Moses Circle
- Palindromic Prime (modified)
- Radical Center (modified)
- Rényi Information
- Second Droz-Farny Circle (modified)
- Steiner Circle
- Stevanović Circle
- Tangential Circle

### Sunday November 21, 2004

- Abel Prize (modified)
- Atiyah-Singer Index Theorem (modified)
- Banach Density
- Bevan Circle
- Bevan Point (modified)
- Bivariate Normal Distribution (modified)
- Brianchon Point (modified)
- Catalan's Constant Approximations
- Central Circle (modified)
- Cofactor (modified)
- Diophantine Equation--4th Powers (modified)
- Lemoine Inellipse (modified)
- MacBeath Inconic (modified)
- Rényi Entropy

### Saturday November 20, 2004

- Anticomplementary Triangle (modified)
- Central Line (modified)
- Circumnormal Triangle (modified)
- Circumtangential Triangle (modified)
- Euler-Gergonne-Soddy Triangle (modified)
- Intangents Triangle (modified)
- Line at Infinity (modified)
- Point at Infinity (modified)

### Friday November 19, 2004

- Kronecker Product (modified)
- Matrix Direct Product (modified)
- Perspector (modified)

### Thursday November 18, 2004

- BCI Triangle (modified)
- de Villiers Points

### Wednesday November 17, 2004

- Almost Integer (modified)
- ASS Theorem (modified)
- Biharmonic Equation (modified)
- Complement (modified)
- Davenport Constant (modified)
- Icosahedron (modified)
- Orthojoin
- Pi Approximations (modified)

### Tuesday November 16, 2004

- Feigenbaum Constant (modified)

### Monday November 15, 2004

- Anticomplement (modified)
- Radical Center (modified)

### Sunday November 14, 2004

- Anticomplement
- Antipedal Line
- Central Circle (modified)
- Isotomic Transversal
- Radical Center (modified)
- Radical Line (modified)
- Trilinear Polar
- Trilinear Pole
- van Lamoen Circle

### Friday November 12, 2004

- Affine Tensor (modified)
- Block Monoid
- Central Circle (modified)
- Cross Number
- Davenport Constant
- Diamond Isomorphism Theorem
- Elasticity
- Extouch Triangle (modified)
- First Group Isomorphism Theorem
- First Ring Isomorphism Theorem
- Fourth Group Isomorphism Theorem
- Fourth Ring Isomorphism Theorem
- Fundamental Homomorphism Theorem
- Hoffman-Singleton Graph (modified)
- Lattice Group Isomorphism Theorem
- Lattice Ring Isomorphism Theorem
- Lie-Type Group (modified)
- Log Normal Distribution (modified)
- Natural Homomorphism
- Natural Projection
- Second Group Isomorphism Theorem
- Second Ring Isomorphism Theorem
- Special Linear Group (modified)
- Third Group Isomorphism Theorem
- Third Ring Isomorphism Theorem

### Thursday November 11, 2004

- Almost Integer (modified)
- Ceva Conjugate
- Cyclocevian Conjugate
- Dihedral Group D_6
- Hyperbolic Tangent (modified)
- Insphere (modified)
- Jacobian Conjecture (modified)
- Kaprekar Routine (modified)
- Kaprekar's Constant
- Kaprekar Sequence
- Primefree Sequence (modified)
- Quantum Stochastic Calculus
- Second Countable Space
- Smale's Problems (modified)
- Sparse Polynomial Square (modified)
- Subfactorial (modified)

### Wednesday November 10, 2004

- Affine Tensor
- Apéry's Constant (modified)
- Apéry's Constant Approximations
- Apocalypse Number (modified)
- Chaitin's Constant (modified)
- Comparable Elements (modified)
- General Linear Group (modified)
- Inner Automorphism
- Insphere (modified)
- Midsphere (modified)
- Mirror Pair
- Outer Automorphism
- Resultant (modified)
- Small Rhombicuboctahedron (modified)
- Snub Dodecahedron (modified)
- Special Linear Group (modified)
- Sylvester Matrix (modified)

### Tuesday November 9, 2004

- Dedekind Eta Function (modified)
- Evil Number (modified)
- Infinite Product (modified)
- Numeral
- Rényi's Polynomial
- Sparse Polynomial Square (modified)

### Monday November 8, 2004

- Bounded from Above
- Bounded from Below
- Comparable Elements
- Evil Number (modified)
- Infimum (modified)
- Ishango Bone
- Kaprekar Routine (modified)
- Maximal Element
- Odd Perfect Number (modified)
- Supremum (modified)

### Sunday November 7, 2004

- Bernoulli Number (modified)
- Rule 30 (modified)
- Series-Parallel Graph (modified)
- Series-Parallel Network (modified)

### Friday November 5, 2004

- Cone (modified)
- Elliptic Cone (modified)
- Evil Number (modified)

### Thursday November 4, 2004

- Associative (modified)
- Bernstein-Szegö Polynomials (modified)
- Binary (modified)
- Castle Rim Function
- Chevalley-Serre Relations
- Chicken McNugget Number
- Commutative (modified)
- Crown Graph
- Cube Square Inscribing (modified)
- Differential Entropy
- Drinfeld Ring
- Elegant Graph
- Evil Number (modified)
- Fibonacci Chain Map
- Fractional Part (modified)
- Helson-Szegö Measure (modified)
- Khinchin's Constant (modified)
- Lie Algebra Simple Root
- Lie Subalgebra
- Logistic Map (modified)
- Nash Equilibrium (modified)
- Orderless
- Partial Derangement
- Petersen Graph (modified)
- Rectilinear Crossing Number (modified)
- Sawtooth Wave (modified)
- Series-Parallel Graph
- Series-Parallel Network
- Serre Relations
- Sheaf
- Sparse Polynomial Square
- Triangle Wave (modified)
- Twin Prime Conjecture (modified)
- Zero-Symmetric Graph (modified)

### Wednesday November 3, 2004

- Beal's Conjecture (modified)
- Compactum
- Curve (modified)
- Digit Sum (modified)
- Erf (modified)
- Evil Number (modified)
- Hereditarily Unicoherent Continuum
- Hermite Polynomial (modified)
- Hurwitz Zeta Function (modified)
- Hyperbolic Cosecant (modified)
- Riemann Zeta Function (modified)

### Tuesday November 2, 2004

- Akhmim Wooden Tablet
- Branch and Bound Algorithm
- Cairo Wooden Tablet
- Egyptian Mathematical Leather Roll
- Egyptian Unit Fraction
- Evolution Strategies (modified)
- Global Optimization
- Infinite Product (modified)
- L'Hospital's Rule (modified)
- Nested Root
- Operations Research (modified)
- Pi Formulas (modified)
- Redheffer Matrix (modified)
- Rhind Papyrus
- Secant (modified)
- Series (modified)
- Sinai Billiards (modified)
- Tabu Search (modified)

### Monday November 1, 2004

- Beast Number (modified)
- Cube Square Inscribing
- Evil Number
- Hypercube (modified)
- Lucas's Root Theorem
- Moving Sofa Problem (modified)
- Square Dissection (modified)
- Unicoherent Space (modified)

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