# New in *MathWorld* -- March
2020

### Tuesday March 31, 2020

- Cycle Graph (modified)
- Graceful Graph (modified)
- Graceful Labeling
- Graceful Numbering
- Knödel Graph
- Ladder Rung Graph (modified)

### Sunday March 29, 2020

- Cubical Graph (modified)
- Dodecahedral Graph (modified)
- Icosahedral Graph (modified)
- Octahedral Graph (modified)
- Platonic Graph (modified)
- Tetrahedral Graph (modified)

### Thursday March 19, 2020

- Mersenne Prime (modified)

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