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 ?
Part of a black hair care industry thought to be worth a billion dollars a year, African hair braiding salons, where braiders deftly twist and interlace strands of natural hair with synthetic extensions into striking hairdos, can be found in cities all across America.
Come and join other children for a day of face painting, hair braiding, games, prizes, and Barney.
Other attractions included henna painting, hair braiding, nail painting, balloon twister, stilt walking, magic show, bouncy castle, pony rides, train ride, food and beverages and much more.
Among the activities on offer will be a "coconut trail" treasure hunt for children, hair braiding, street acts, music, jugglers and a photoboard to turn customers into pirates.
Other festivities include lei making, hair braiding and other children's activities.
Courses on the timetable include drama, transfer printing, sewing, sport, sign language, welfare advice, ICT, Spansih for beginners, cake decorating, hair braiding, Indian head massage - and more Elizabeth Brocklehurst, tel: 0151 733 7255
There will also be stalls and activities such as henna body painting, massage and hair braiding at the extravaganza.
Last year businesses ranged from hair braiding and car washing to designing plant pots for public sale and running a Welsh produce restaurant.
The beads allow Newkirk to suggest elements of fashion and interior design (cornrow hair braiding and swank room dividers, equally at home in a swinging bachelor pad and a blaxploitation flick) without ever disavowing the referential impact of the body on such elements.
Hair braiding especially styles enhanced with hair extensions, is a time-consuming and money-consuming process.
There was also hair braiding, face painting and a stall featuring resident artist and fashion illustrator Frances Moffatt.
There was face painting, hair braiding, barbecue, bric-a-brac, plant stall, games, plus lots more and a good time was had by all.