crossing number

Questions

What does crossing number mean?

The minimum, taken over all planar representations of a link or graph, of the number of times it crosses itself.

How to pronounce crossing number

1. Open the pronunciation page — Open the Speakur entry for “crossing number”.
2. Read the phonetic spelling — Read the IPA spelling () so you know which sounds to aim for.
3. Play the audio — Click Play to hear reference audio for “crossing number”.
4. Repeat and practice — Say “crossing number” aloud, matching stress and vowels until it feels natural.