# New in *MathWorld* -- March
2005

### Thursday March 31, 2005

- Busy Beaver (modified)
- Catalan-Mersenne Number (modified)
- Crank Conjecture
- Partition Function P Congruences (modified)
- Pivotal Condensation

### Wednesday March 30, 2005

- Integral (modified)
- Interior Point Method (modified)

### Monday March 28, 2005

- Astroid (modified)
- At Least One
- Bill Picture
- Circle Catacaustic (modified)
- Circle of Curvature
- Circumcevian Triangle (modified)
- Conway's Soldiers (modified)
- Cubic Number (modified)
- Existence (modified)
- Gaussian Integer (modified)
- Greek Cross (modified)
- Irreducible Fraction
- Nephroid (modified)
- Pentaflake (modified)
- Prime Number (modified)
- Pythagoras Tree (modified)
- Reducible Fraction
- Right Triangle (modified)
- Steinmetz Solid (modified)
- Tree of Pythagoras
- Triangle Geometry (modified)

### Monday March 21, 2005

- First Morley Triangle (modified)

### Sunday March 20, 2005

- d'Alembertian (modified)
- Laplacian (modified)
- Motzkin Number (modified)
- Trinomial Coefficient (modified)

### Saturday March 19, 2005

### Friday March 18, 2005

- Abel Prize (modified)
- Moore Graph (modified)

### Thursday March 17, 2005

- Base (modified)
- Phi Number System (modified)

### Wednesday March 16, 2005

- Combination (modified)
- Hamiltonian Cycle (modified)
- Hamiltonian Graph (modified)
- HamiltonianQ
- Lucas n-Step Number
- Secant (modified)
- Strongly Connected Digraph (modified)
- Tournament (modified)

### Tuesday March 15, 2005

- Bertrand's Postulate (modified)
- Dot Product (modified)
- Euler Line (modified)
- Nobbs Points (modified)
- Pentagonal Number Theorem (modified)
- Tangent Circles (modified)

### Monday March 14, 2005

- Bessel Polynomial (modified)
- Navier-Stokes Equations (modified)

### Sunday March 13, 2005

- Algebraic Number (modified)
- Andrews-Gordon Identity (modified)
- Elliptic Curve Factorization Method (modified)
- Göllnitz-Gordon Identities (modified)
- Integer Sequence Primes (modified)
- Rogers-Ramanujan Identities (modified)
- Tetranacci Constant
- Tetranacci Number (modified)
- Triangle Geometry

### Saturday March 12, 2005

- Autocorrelation (modified)
- Barker Sequence
- Costas Array
- Finite Difference (modified)

### Friday March 11, 2005

- Cuboctahedron (modified)
- Dyson Mod 27 Identities
- Icosidodecahedron (modified)
- Rogers-Ramanujan Identities (modified)

### Thursday March 10, 2005

### Wednesday March 9, 2005

- Bailey Mod 9 Identities (modified)
- Cosecant (modified)
- Cotangent (modified)
- Hyperbolic Cosecant (modified)
- Hyperbolic Cosine (modified)
- Hyperbolic Cotangent (modified)
- Hyperbolic Secant (modified)
- Hyperbolic Sine (modified)
- Petr-Douglas-Neumann Theorem (modified)
- Petr-Neumann-Douglas Theorem
- Repunit (modified)
- Rogers-Ramanujan Identities (modified)
- Secant (modified)
- Undecahedron

### Tuesday March 8, 2005

- Andrews-Gordon Identity
- Antiperiodic Function
- Beta Function (modified)
- Diophantine Equation--3rd Powers (modified)
- Diophantine Equation--4th Powers (modified)
- Disk Point Picking (modified)
- Eigen Decomposition Theorem (modified)
- Göllnitz-Gordon Identities (modified)
- Hyperbolic Cosine (modified)
- Hyperbolic Sine (modified)
- Hyperbolic Tangent (modified)
- Palindromic Number (modified)
- Ring (modified)
- Rogers-Ramanujan Identities (modified)

### Monday March 7, 2005

- Alternating Factorial (modified)
- Berry Paradox (modified)
- Hessian (modified)
- Multinomial Coefficient (modified)
- Palindromic Number (modified)

### Sunday March 6, 2005

- Rogers-Ramanujan Identities (modified)

### Saturday March 5, 2005

- 120-Cell (modified)
- Bailey Mod 9 Identities
- Feigenbaum Function (modified)
- Gyroid (modified)
- Integer Sequence Primes (modified)
- Lorenz Attractor (modified)
- Menger Sponge (modified)
- Rogers-Ramanujan Identities (modified)
- Rogers-Selberg Identities
- Slater's Identity (modified)
- Wolfram Axiom (modified)

### Friday March 4, 2005

- Aleph-0 (modified)
- Aleph-Zero
- Arithmetic Mean (modified)
- Jackson-Slater Identity
- Legendre Polynomial (modified)
- Map Coloring (modified)
- Smith Number (modified)

### Thursday March 3, 2005

- Carmichael Number (modified)
- Full Reptend Prime (modified)
- Latus Rectum (modified)
- Power Series (modified)
- Square Point Picking (modified)
- Transcendental Number (modified)
- Trinomial Coefficient (modified)
- Universal Parabolic Constant

### Wednesday March 2, 2005

- 42 (modified)
- Alternating Factorial
- Archimedes' Axiom (modified)
- Factorial Sums (modified)
- Left Factorial (modified)
- Pell Number (modified)

### Tuesday March 1, 2005

- Multinomial Coefficient (modified)

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