| Display title | Arf invariant of a knot |
| Default sort key | Arf invariant of a knot |
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| Page ID | 233968 |
| Page content language | en - English |
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| Page creator | imported>NBrush |
| Date of page creation | 18:43, 6 February 2024 |
| Latest editor | imported>NBrush |
| Date of latest edit | 18:43, 6 February 2024 |
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Description | Content |
Article description: (description)
This attribute controls the content of the description and og:description elements. | In the mathematical field of knot theory, the Arf invariant of a knot, named after Cahit Arf, is a knot invariant obtained from a quadratic form associated to a Seifert surface. If F is a Seifert surface of a knot, then the homology group H1(F, Z/2Z) has a quadratic form whose value is the number of... |
