# New in *MathWorld* -- January
2002

### Thursday January 31, 2002

- Almost Integer (modified)
- Beast Number (modified)
- Elliptic Integral of the First Kind (modified)
- Elliptic Integral of the Second Kind (modified)
- Ellipticity (modified)
- Pancake Sorting (modified)
- Right Triangle (modified)

### Wednesday January 30, 2002

- Domain Invariance Theorem (modified)
- Generalized Hypergeometric Differential Equation (modified)
- Lagrange's Group Theorem (modified)
- Quantifier Elimination (modified)

### Tuesday January 29, 2002

- Exchange Shuffle (modified)
- Mahler Measure (modified)
- Poisson Bracket (modified)
- Railroad Track Problem (modified)
- Riffle Shuffle (modified)
- Shuffle (modified)

### Monday January 28, 2002

- Eigenspace (modified)
- Lg (modified)
- Nat

### Friday January 25, 2002

- Circumsphere (modified)
- Heart Surface (modified)
- Zome (modified)

### Thursday January 24, 2002

- Binary Operation (modified)
- Cauchy Principal Value (modified)

### Wednesday January 23, 2002

- Hermite Normal Form
- Reversion to the Mean (modified)
- van der Waerden's Theorem (modified)

### Monday January 21, 2002

- Cuboid (modified)
- Euler Brick (modified)
- Meijer G-Function (modified)
- Perfect Cuboid
- Space Diagonal (modified)

### Sunday January 20, 2002

- Bernoulli Distribution
- Directed Graph (modified)

### Wednesday January 16, 2002

- ANOVA (modified)

### Tuesday January 15, 2002

- Elongated Dodecahedron (modified)

### Sunday January 13, 2002

- Division Algebra (modified)

### Friday January 11, 2002

- Circle-Circle Tangents
- Circle Tangent Line (modified)
- Heptadecagon (modified)

### Thursday January 10, 2002

- Circumcenter (modified)

### Wednesday January 9, 2002

- Convex Polyhedron (modified)

### Tuesday January 8, 2002

### Tuesday January 1, 2002

- Khinchin-Lévy Constant (modified)
- Khinchin's Constant (modified)

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