# New in *MathWorld* -- February
2021

### Wednesday February 17, 2021

- Block (modified)

### Tuesday February 16, 2021

- Asymptotic (modified)
- Asymptotic Notation (modified)
- Exists (modified)
- For All (modified)
- Generic Cylindrical Algebraic Decomposition (modified)
- Graph Coarseness (modified)
- Implies (modified)
- Order of Magnitude (modified)

### Friday February 12, 2021

- Biplanar Graph
- Chordal Graph (modified)
- Graph Coarseness (modified)
- Graph Thickness (modified)
- Graph Union (modified)
- Minimal Cover (modified)
- Möbius Ladder (modified)
- Split Graph (modified)

### Thursday February 11, 2021

- Planar Graph (modified)

### Wednesday February 10, 2021

- Doublecross Graph (modified)
- Möbius Ladder (modified)
- Singlecross Graph (modified)

### Sunday February 7, 2021

- Cycle Chord (modified)
- Graph Bridge (modified)

### Tuesday February 2, 2021

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