linking number

linking number
in topology (def. 3), the total number of times one strand of the DNA double helix winds around the other in a right-hand direction, given a DNA molecule with constrained ends. Two molecules differing only in linking number are topoisomers.

Medical dictionary. 2011.

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  • linking number — linking number. См. число зацеплений. (Источник: «Англо русский толковый словарь генетических терминов». Арефьев В.А., Лисовенко Л.А., Москва: Изд во ВНИРО, 1995 г.) …   Молекулярная биология и генетика. Толковый словарь.

  • Linking number — In mathematics, the linking number is a numerical invariant that describes the linking of two closed curves in three dimensional space. Intuitively, the linking number represents the number of times that each curve winds around the other. The… …   Wikipedia

  • Self-linking number — In knot theory, the self linking number is an invariant of framed knots. It is related to the linking number of curves.A framing of a knot is a choice of a non tangent vector at each point of the knot. Given a framed knot C , the self linking… …   Wikipedia

  • number — number1 W1S1 [ˈnʌmbə US bər] n ▬▬▬▬▬▬▬ 1¦(number)¦ 2¦(phone)¦ 3¦(in a set/list)¦ 4¦(for recognizing somebody/something)¦ 5¦(amount)¦ 6 numbers 7¦(music)¦ 8¦(magazine)¦ 9 have somebody s number 10 black/elegant etc …   Dictionary of contemporary English

  • Linking pin model — The Linking pin model is an idea developed by Rensis Likert in which an organisation is represented as a number of overlapping work units in which members of one unit are leaders of another. In this scheme, the supervisor/manager has the dual… …   Wikipedia

  • number — 1. A symbol expressive of a certain value or of a specific quantity determined by count. 2. The place of any unit in a series. atomic n. (Z) the n. of protons in the nucleus of an atom; it indicates the position of the …   Medical dictionary

  • Wikipedia:Manual of Style/Linking — For technical information about link formatting, see Help:Link. For information on adding external links to articles, see Wikipedia:External links. Wikilinks redirects here. For the IRC script, see WP:Scripts/Wikilinks. This guideline is a part… …   Wikipedia

  • Average crossing number — In the mathematical subject of knot theory, the average crossing number of a knot is the result of averaging over all directions the number of crossings in a knot diagram of the knot obtained by projection onto the plane orthogonal to the… …   Wikipedia

  • Methods of website linking — Overlinking redirects here. For the preferred style on Wikipedia, see Wikipedia:OVERLINK. This article pertains to methods of hyperlinking to/of different websites, often used in regard to search engine optimization (SEO). Many techniques and… …   Wikipedia

  • Chinese linking rings — The Chinese linking rings is considered[by whom?] to be a classic of illusion magic. In the traditional effect, solid metal rings appear to link and unlink, pass through each other, and form chains and other complex patterns and configurations.… …   Wikipedia

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