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Crossing number (graph theory)

math Maturity 5-7

Sometimes lines cross each other.

3-crossing Heawood graph.svg
3-crossing Heawood graph.svg
This can make things messy. We want to find the fewest crossings. This helps us see things clearly. It can help us plan a factory. Can you draw lines without crossing?

39 words
🖼️ Images & Media (2)
File:3-crossing Heawood graph.svg
3-crossing Heawood graph.svg
File:Zarankiewicz K4 7.svg
Zarankiewicz K4 7.svg
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📚 Content adapted from Wikipedia | Readability: FK 11.8 | Vital Level 5