# New in *MathWorld* -- April
2013

### Monday April 29, 2013

- Rogers-Ramanujan Continued Fraction (modified)

### Friday April 26, 2013

- Kuratowski Graph (modified)
- Pentatope (modified)
- Pentatope Graph (modified)

### Monday April 22, 2013

- Ampersand Curve (modified)
- Bitangent (modified)
- Plücker's Curve
- Plücker's Quartic
- Plücker's Quartic Curve
- Trott Curve

### Saturday April 20, 2013

- Graph Circumference (modified)

### Friday April 19, 2013

- Graph Diameter (modified)
- Graph Eccentricity (modified)
- Graph Radius (modified)

### Thursday April 18, 2013

### Wednesday April 17, 2013

### Tuesday April 9, 2013

- Arboricity (modified)
- Keller Graph (modified)

### Monday April 8, 2013

- Graph Coarseness (modified)
- Sparse Matrix (modified)

### Sunday April 7, 2013

- Graph Coarseness (modified)
- Graph Skewness
- Graph Thickness (modified)

### Saturday April 6, 2013

- Cactus Graph (modified)
- Chordless Cycle (modified)
- Halved Cube Graph (modified)

### Friday April 5, 2013

- Graph Bandwidth (modified)
- Matching (modified)
- Symmetric Graph (modified)

### Thursday April 4, 2013

- Abelian Group (modified)
- Cylindrical Hoof (modified)
- Cylindrical Wedge (modified)

### Tuesday April 2, 2013

- Hamilton-Connected Graph (modified)

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