braid

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braid

[brād]
(mathematics)
A braid of order n consists of two parallel lines, sets of n points on each of the lines with a one-to-one correspondence between them, and n nonintersecting space curves, each of which connects one of the n points on one of the parallel lines with the corresponding point on the other; the space curves are configured so that no curve turns back on itself, in the sense that its projection on the plane of the parallel lines lies between the parallel lines and intersects any line parallel to them no more than once, and any two such projections intersect at most a finite number of times.
References in periodicals archive ?
She challenged the license law, and the training requirement was reduced in 2007 for hair braiders to a 35-hour certificate.
In North Carolina, for instance, lawmakers passed legislation in 2010 requiring braiders to be licensed, with the test being administered only in English.
In 2011, the Florida House approved a bill that would deregulate 14 licensed occupations, including auctioneers, athlete agents, hair braiders, interior designers, and professional fundraising consultants and solicitors.
The bill was pushed by longtime braider Isis Brantley, who has called for a rule change for years.
She was a wonderful rug braider and talented seamstress.
It was only after an equally Herculean effort led by Tupelo-based hair braider Melony Armstrong that the law changed in 2005.
The Wild West Wagon and Pony Playset includes a hair braider for you and your pony.
We found an expert braider in Sharon Aidoo, who works from Headworkers salon in Dumbarton Road, Glasgow.
Two examples here would be Conair, which is making an instructional video available for its new battery-operated hair braider, and Capresso, which has some of its specialty retail partners go to the consumers' homes to set up their new machines and teach them the ins-and-outs of operating them.
To this end, Braider argues that the naturalism of northern Renaissance and baroque painting undermined the belief in allegory necessary to sustain an "ut pictura poesis" conception of art and thereby paved the way for modernist "analyses of the possibilities and constraints embedded in the actual material medium" (251) of painting and literature.
Three decades into her career as a hair braider, Isis Brantley has struggled with lawsuits and regulatory hurdles.