Vertical Arcs

Some articles on arcs, vertical:

Tangle Theory - Rational and Algebraic Tangles
... to the trivial 2-tangle as a map of pairs consisting of the 3-ball and two arcs ... The four endpoints of the arcs on the boundary circle of a tangle diagram are usually referred as NE, NW, SW, SE, with the symbols referring to the compass directions ... form start with a tangle diagram consisting of two horizontal (vertical) arcs add a "twist", i.e ...
Tangle (mathematics) - Rational and Algebraic Tangles
... as a map of pairs consisting of the 3-ball and two arcs ... The four endpoints of the arcs on the boundary circle of a tangle diagram are usually referred as NE, NW, SW, SE, with the symbols referring to the compass ... a particular simple form start with a tangle diagram consisting of two horizontal (vertical) arcs add a "twist", i.e ...

Famous quotes containing the word vertical:

    In bourgeois society, the French and the industrial revolution transformed the authorization of political space. The political revolution put an end to the formalized hierarchy of the ancien regimé.... Concurrently, the industrial revolution subverted the social hierarchy upon which the old political space was based. It transformed the experience of society from one of vertical hierarchy to one of horizontal class stratification.
    Donald M. Lowe, U.S. historian, educator. History of Bourgeois Perception, ch. 4, University of Chicago Press (1982)