# New in *MathWorld* -- December
2013

### Sunday December 29, 2013

- Graph Likelihood (modified)

### Saturday December 28, 2013

- Graph Cycle (modified)
- Hamiltonian Cycle (modified)
- Hamiltonian Path (modified)

### Friday December 27, 2013

- Spikey (modified)

### Thursday December 26, 2013

- Graph Likelihood (modified)

### Monday December 23, 2013

- Graph Likelihood (modified)

### Saturday December 21, 2013

### Thursday December 19, 2013

- Bishop Graph (modified)
- Cactus Graph (modified)
- Circuit Rank (modified)
- Graph Cycle (modified)
- King Graph (modified)
- Queen Graph (modified)
- Rook Graph (modified)

### Wednesday December 18, 2013

- Graph Cycle (modified)
- Hamiltonian Cycle (modified)
- Square-Free Graph (modified)
- Triangle-Free Graph (modified)

### Tuesday December 17, 2013

- Graph Skewness (modified)

### Monday December 16, 2013

- Graph Cycle (modified)
- Hamiltonian Cycle (modified)
- Hamiltonian Path (modified)

### Wednesday December 11, 2013

- Araya-Wiener Graphs
- Hypohamiltonian Graph (modified)
- Hypotraceable Graph (modified)

### Monday December 9, 2013

- Hamiltonian Path (modified)

### Saturday December 7, 2013

- Abundant Number (modified)
- Pseudoperfect Number (modified)
- Subset Sum Problem (modified)
- Weird Number (modified)

### Friday December 6, 2013

- Regular Tetrahedron (modified)
- Tetrahedron (modified)

### Thursday December 5, 2013

- Chromatic Polynomial (modified)

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