# New in *MathWorld* -- January
2010

### Saturday January 30, 2010

- Cubic Symmetric Graph (modified)
- Graph Expansion (modified)
- Unit-Distance Graph (modified)

### Friday January 29, 2010

- Biggs-Smith Graph (modified)
- Graph Expansion (modified)
- I Graph (modified)

### Thursday January 28, 2010

- Biggs-Smith Graph (modified)
- Hamiltonian Graph (modified)
- H Graph (modified)
- Jackson-Slater Identity (modified)
- Rectilinear Crossing Number (modified)
- Y Graph

### Wednesday January 27, 2010

- Abscissa (modified)
- Adams' Theorem
- Cellular Approximation Theorem
- Cellular Map
- Connected Graph (modified)
- Hopf Invariant One Theorem (modified)
- H-Space (modified)
- Orientable Manifold
- Pre-Image (modified)
- Simple Graph (modified)
- Subcategory

### Tuesday January 26, 2010

- Caveman Graph (modified)

### Monday January 25, 2010

### Saturday January 23, 2010

- Square Number (modified)

### Thursday January 21, 2010

- Contiguous USA Graph
- Cubical Graph (modified)
- Lattice Reduction (modified)
- Musical Graph
- Petersen Graph (modified)

### Wednesday January 20, 2010

### Tuesday January 19, 2010

- Closure
- Cubic Symmetric Graph (modified)
- E Graph (modified)
- Handshake Problem
- H Graph (modified)
- Homeomorphism Class
- Hypercube Graph (modified)
- Knot Genus (modified)
- Robertson-Seymour Theorem (modified)
- Self-Dual (modified)
- Unit-Distance Graph (modified)

### Monday January 18, 2010

- A Graph (modified)
- Banner Graph (modified)
- Bull Graph (modified)
- Cubic Symmetric Graph (modified)
- Fish Graph (modified)
- Hypercube Graph (modified)
- Longhorn Graph (modified)
- Moth Graph (modified)
- R Graph (modified)
- Unit-Distance Graph (modified)

### Sunday January 17, 2010

- Convex Combination
- Cubic Symmetric Graph (modified)
- Disconnected Set
- Generalized Petersen Graph (modified)
- Homotopy Equivalence
- Homotopy Sphere
- Join
- Meet
- Null-Homotopic
- Pre-Image
- Rationals
- Reals
- Tutte 8-Cage (modified)
- Unit-Distance Graph (modified)

### Friday January 15, 2010

- Bell Number (modified)

### Thursday January 14, 2010

- Pi Approximations (modified)

### Tuesday January 12, 2010

- Bicubic Graph (modified)
- Bicubic Nonhamiltonian Graph
- Dodecahedral Graph (modified)
- Ellingham-Horton Graphs
- Georges Graph
- Heawood Graph (modified)
- Icosahedral Graph (modified)
- Integral Embedding (modified)
- Möbius-Kantor Graph (modified)
- Nonhamiltonian Bicubic Graph
- Star Polygon (modified)
- Tutte 8-Cage (modified)
- Tutte Conjecture (modified)

### Monday January 11, 2010

- Cubical Graph (modified)
- Dodecahedral Graph (modified)
- Icosahedral Graph (modified)
- Octahedral Graph (modified)
- RSA Number (modified)
- Tetrahedral Graph (modified)

### Sunday January 10, 2010

- Generalized Petersen Graph (modified)
- Icosahedral Graph (modified)
- Integral Embedding (modified)

### Saturday January 9, 2010

### Friday January 8, 2010

- Dyck Graph (modified)
- Generalized Petersen Graph (modified)
- Heawood Graph (modified)
- Nauru Graph (modified)
- Pappus Graph (modified)
- Unit-Distance Graph (modified)
- xyz Embedding
- xyz Graph

### Thursday January 7, 2010

- Coxeter Graph (modified)
- Cubic Symmetric Graph (modified)
- Dyck Graph (modified)
- Generalized Petersen Graph (modified)
- Nauru Graph
- Unit-Distance Graph (modified)

### Monday January 4, 2010

- Integral Embedding (modified)

### Sunday January 3, 2010

- Cubical Graph (modified)
- Dodecahedral Graph (modified)
- Integral Embedding (modified)
- Octahedral Graph (modified)
- Pappus Graph (modified)
- Tetrahedral Graph (modified)
- Unit-Distance Embedding
- Unit-Distance Graph (modified)

### Saturday January 2, 2010

- Fáry Embedding (modified)
- Graph Crossing Number (modified)
- Graph Embedding (modified)
- Planar Embedding
- Planar Straight Line Embedding
- Planar Straight Line Graph (modified)
- Plane Graph (modified)
- Rectilinear Crossing Number (modified)
- Straight Line Embedding

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