hyrna

See also: hýrna and hyrne

Icelandic
def. deriv.A 3-simplex, also known as a ferflötungur (“a tetrahedron”), fjórflötungur (“a tetrahedron”), þrístrend strýta (“a tetrahedron”) or þrístrendur píramíti (“a tetrahedron”).

Etymology

Related to the noun horn (“an angle, a corner”).

Pronunciation
  • IPA(key): /ˈhɪrtna/
  • Rhymes: -ɪrtna

Noun

hyrna f (genitive singular hyrnu, nominative plural hyrnur)

  1. a carton in the shape of a tetrahedron or a triangular pyramid
  2. (geometry, topology) a simplex

Declension

This noun needs an inflection-table template.

Derived terms
derived terms from hyrna (“a carton”)
  • mjólkurhyrna
  • þríhyrna
derived terms from hyrna (“a simplex”)
  • hyrnuaðferð (the simplex method)
  • hyrnubákn (simplicial complex)
  • hyrnufruma (simplicial cell)
  • hyrnukeðja (simplicial chain)
  • hyrnunálgun (simplicial approximation)
  • hyrnurit (simplex algorithm)
  • hyrnusvipfræði (simplicial homology)
  • hyrnuvörpun (simplicial mapping)
  • hyrnuþyrping (simplicial complex)

See also

Further reading

Norwegian Nynorsk

Noun

hyrna n

  1. plural definite of hyrne

Noun

hyrna f

  1. singular definite of hyrne

Old Norse

Etymology

From Proto-Germanic *hurnijǭ, feminine diminutive of *hurną whence Old Norse horn. Ultimately from Proto-Indo-European *ḱerh₂-.

Noun

hyrna f

  1. point of an axe-head

Declension
  Declension of hyrna (weak ōn-stem)
feminine singular plural
indefinite definite indefinite definite
nominative hyrna hyrnan hyrnur hyrnurnar
accusative hyrnu hyrnuna hyrnur hyrnurnar
dative hyrnu hyrnunni hyrnum hyrnunum
genitive hyrnu hyrnunnar hyrna hyrnanna

Descendants

References
  • hyrna in Geir T. Zoëga (1910) A Concise Dictionary of Old Icelandic, Oxford: Clarendon Press
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