- crosscap
- Математика: заклеивание листами Мебиуса, заклеивать листами Мебиуса, лист Мебиуса, скрещённый колпак
Универсальный англо-русский словарь. Академик.ру. 2011.
crosscap
Смотреть что такое "crosscap" в других словарях:
Crosscap number — In the mathematical field of knot theory, the crosscap number of a knot K is the minimum of taken over all compact, connected, non orientable surfaces S bounding K; here χ is the Euler characteristic. The crosscap number of the unknot is zero, as … Wikipedia
Fundamental polygon — In mathematics, each closed surface in the sense of geometric topology can be constructed from an even sided oriented polygon, called a fundamental polygon, by pairwise identification of its edges. Fundamental parallelogram defined by a pair of… … Wikipedia
Seifert surface — In mathematics, a Seifert surface is a surface whose boundary is a given knot or link. Such surfaces can be used to study the properties of the associated knot or link. For example, many knot invariants are most easily calculated using a Seifert… … Wikipedia
List of mathematics articles (C) — NOTOC C C closed subgroup C minimal theory C normal subgroup C number C semiring C space C symmetry C* algebra C0 semigroup CA group Cabal (set theory) Cabibbo Kobayashi Maskawa matrix Cabinet projection Cable knot Cabri Geometry Cabtaxi number… … Wikipedia
List of knot theory topics — Knot theory is the study of mathematical knots. While inspired by knots which appear in daily life in shoelaces and rope, a mathematician s knot differs in that the ends are joined together so that it cannot be undone. In precise mathematical… … Wikipedia
Y-homeomorphism — In mathematics, the y homeomorphism, or crosscap slide, is a special type of auto homeomorphism in non orientable surfaces. It can be constructed by sliding a Möbius band included on the surface around an essential 1 sided closed curve until the… … Wikipedia
