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Murasugi sum

Murasugi sum noun: the union of a finite sequence of surfaces taken over a disk common to every adjacent pair of the sequence, such that the boundary of the disk comprises some even number of closed arcs, disjoint except at their endpoints, which are alternatingly subarcs of the two surfaces' boundaries.

Noun

Murasugi sum (plural Murasugi sums)

  1. The union of a finite sequence of surfaces taken over a disk common to every adjacent pair of the sequence, such that the boundary of the disk comprises some even number of closed arcs, disjoint except at their endpoints, which are alternatingly subarcs of the two surfaces' boundaries.
  2. The union of links formed by taking such a sum of their Seifert surfaces and taking the boundary of the result.

Forms of Murasugi sum

pluralMurasugi sums

Origin of Murasugi sum

After Kunio Murasugi.

Questions about Murasugi sum

What does Murasugi sum mean?
Murasugi sum means the union of a finite sequence of surfaces taken over a disk common to every adjacent pair of the sequence, such that the boundary of the disk comprises some even number of closed arcs, disjoint except at their endpoints, which are alternatingly subarcs of the two surfaces' boundaries.
What part of speech is Murasugi sum?
Murasugi sum is a noun.
What is the plural of Murasugi sum?
The plural of Murasugi sum is Murasugi sums.

Words near Murasugi sum in the dictionary

  1. muraqaba
  2. muraqabah
  3. Murari
  4. Muras
  5. Murasaki
  6. Murasugi sum
  7. Murasugi sums
  8. Murat
  9. Murata
  10. murataite
  11. Muratalla

Source and license

Adapted from Wiktionary: Murasugi sum (page history and authors). Text available under the Creative Commons Attribution-ShareAlike 4.0 license. Word.ws reformatted the entry and added links. Wiktionary data of 2026-09-02.

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