| dbo:abstract |
In mathematics, in particular in algebraic topology, the Hopf invariant is a homotopy invariant of certain maps between n-spheres. (en) 호모토피 이론에서 호프 불변량(Hopf不變量, 영어: Hopf invariant)은 특정한 차원의 두 초구 사이의 연속 함수를 분류하는 정수이다. (ko) Инвариант Хопфа — гомотопический инвариант отображений между сферами определённых размерностей.Предложен Хайнцем Хопфом в 1931 году. (ru) Inom matematiken, speciellt inom algebraisk topologi, är Hopfinvarianten, uppkallad efter Heinz Hopf, en homotopiinvariant av vissa avbildningar mellan sfärer. (sv) 在数学特别是代数拓扑学中，霍普夫不变量（英語：Hopf invariant）是球面之间某些映射的一个同伦不变量。 (zh) |
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http://www.maths.ed.ac.uk/~aar/slides/hopfbeam.pdf |
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A.V. (en) |
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h/h048000 (en) |
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Shokurov (en) |
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Hopf invariant (en) |
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| rdfs:comment |
In mathematics, in particular in algebraic topology, the Hopf invariant is a homotopy invariant of certain maps between n-spheres. (en) 호모토피 이론에서 호프 불변량(Hopf不變量, 영어: Hopf invariant)은 특정한 차원의 두 초구 사이의 연속 함수를 분류하는 정수이다. (ko) Инвариант Хопфа — гомотопический инвариант отображений между сферами определённых размерностей.Предложен Хайнцем Хопфом в 1931 году. (ru) Inom matematiken, speciellt inom algebraisk topologi, är Hopfinvarianten, uppkallad efter Heinz Hopf, en homotopiinvariant av vissa avbildningar mellan sfärer. (sv) 在数学特别是代数拓扑学中，霍普夫不变量（英語：Hopf invariant）是球面之间某些映射的一个同伦不变量。 (zh) |
| rdfs:label |
Hopf invariant (en) 호프 불변량 (ko) Инвариант Хопфа (ru) Hopfinvariant (sv) 霍普夫不变量 (zh) |
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