linking number


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link·ing num·ber (L),

a property of a long biopolymer (such as duplex DNA) equal to the number of twists (related to the frequency of turns around the central axis of the helix) plus the writhing number.

link·ing num·ber

(L) (lingk'ing nŭm'bĕr)
A property of a long biopolymer (such as duplex DNA) equal to the number of twists (related to the frequency of turns around the central axis of the helix) plus the writhing number.
References in periodicals archive ?
i] [right arrow] 1 is called the total linking number (or TLN for short) [Z.
3) Average returned linking number of member search engines;
Research and experimental results show that the performance, response time, linking number and user experience of each member search engines influence their choice of member search engines in different degrees.
When the linking number is reduced in closed circular DNA, the molecule supercoils by minimizing twisting and bending.
The integral interlacement numbers known as linking number (Ln).
White (1969) shown that the linking number decomposed into two parts, which can be expressed:
To resolve the second question we require the notion of the linking number L([C.
If [MATHEMATICAL EXPRESSION NOT REPRODUCIBLE IN ASCII] is perturbed in K', minimally to avoid intersecting [MATHEMATICAL EXPRESSION NOT REPRODUCIBLE IN ASCII], in K', then it may be seen that the absolute value of the linking number of [MATHEMATICAL EXPRESSION NOT REPRODUCIBLE IN ASCII] and [MATHEMATICAL EXPRESSION NOT REPRODUCIBLE IN ASCII] becomes less than the absolute value of their linking when [MATHEMATICAL EXPRESSION NOT REPRODUCIBLE IN ASCII] is similarly perturbed in K'.
3) Compute the linking number of two disjoint oriented polygonal cycles C and D in [R.
Geometric linking, independent of linking number, can be used to estimate a lower bound on the energy of an incompressible flow," Freedman says.
In the ordinary knot theory, the linking number is an elementary and important invariant for oriented two-component links.
two-component links), these numbers correspond to the linking number.

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