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a.1.(Geom.) That can be passed over in a single course; - said of a curve when the coördinates of the point on the curve can be expressed as rational algebraic functions of a single parameter
References in periodicals archive ?
Drawn according to the unicursal form known as the Chartres model (after the 13th-century pavement maze that patterns the crossing at Chartres Cathedral; Fig.
The paschal face cannot be sketched according to a single cultural world view, nor can its dynamic character be unchangingly affixed, as unicursal image, to a wooden cross" (344).
Some of these choices "lead to dead ends or blind alleys" (Kern, 2000:23), neither of which are possible on the labyrinth's uninterrupted, unicursal path.
First, we learn that a labyrinth comprises "buildings", a feature totally absent in the flat, unicursal pathways that are ubiquitous in contemporary health spas and wellness centres.
A few lines on, the poet directly juxtaposes the female mind's flexibility with the homogenic and unicursal thinking of man:
These were unicursal mazes, with many twists and turns but no blind alleys, so the pilgrim had no choices to make.
Multicursal mazes, presenting the participant with a perplexing quandary, replaced the unicursal labyrinth of the Middle Ages, in which the Christian had no choice but to tread the path to salvation.
It is an oddity of these visual labyrinths that before the sixteenth century they are always unicursal, that is to say that the y contain no blind alleys or choices and always lead through manifold windings from an entrance inside and then out again.
The first insertion into the narrative forms a gyre that, reminiscent of a unicursal maze, spirals into a center and then returns out again along the same path.
Hermann Kern (1982) and Penelope Doob (1990) distinguish between unicursal and multicursal labyrinths: in the former, the wanderer is confused by an "inherent disorientation" caused, and fully controlled, by the maze architect who knows the single pathway to the center; in the latter, the wanderer repeatedly chooses which path to take and by choosing correctly transcends his confusion.
Zeeko has developed a unicursal random tool path that does not follow a regular pattern and is non-crossing.
In her book, an indispensable study of the literary and artistic uses of the labyrinth from Classical Antiquity to the Middle Ages, Doob, 48-51, establishes a fundamental distinction between the unicursal labyrinth, which consists of a single path making its way unambiguously to the center without any directional choices facing the traveler, and the multicursal maze which multiplies "ambages" and confusion.