umbilic
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Umbilic — Um*bil ic, n. [From L. umbilicus: cf. F. ombilic. See {Navel}.] 1. The navel; the center. [Obs.] The umbilic of the world. Sir T. Herbert. [1913 Webster] 2. (Geom.) An umbilicus. See {Umbilicus}, 5 (b) . [1913 Webster] … The Collaborative International Dictionary of English
Umbilic — Um*bil ic, a. (Anat.) See {Umbilical}, 1. [1913 Webster] … The Collaborative International Dictionary of English
umbilic — Umbilicus Um bi*li cus, n. [L. See {Umbilic}.] 1. (Anat.) The depression, or mark, in the median line of the abdomen, which indicates the point where the umbilical cord separated from the fetus; the navel. [1913 Webster] 2. (Gr. & Rom. Antiq.) An … The Collaborative International Dictionary of English
Umbilic torus — Created by Helaman Ferguson, the umbilic torus is a single edged 3 dimensional figure. Ferguson created a 27 inch bronze sculpture, Umbilic Torus, and it is his most widely known piece of art. The torus blurs the distinction between mathematics… … Wikipedia
umbilic — «us (L). The navel … Dictionary of word roots and combining forms
umbilic — noun ( s) Etymology: Latin umbilicus navel, middle, center obsolete : a middle point : center … Useful english dictionary
Katastrophentheorie (Mathematik) — Die mathematische Katastrophentheorie beschäftigt sich mit unstetigen, sprunghaften Veränderungen von bestimmten dynamischen Systemen. Diese können, auch wenn sie unter bestimmten Voraussetzungen einen stabilen Zustand anstreben, bei Änderungen… … Deutsch Wikipedia
Catastrophe theory — This article refers to the study of dynamical systems. For other meanings, see catastrophe. In mathematics, catastrophe theory is a branch of bifurcation theory in the study of dynamical systems; it is also a particular special case of more… … Wikipedia
Principal curvature — Saddle surface with normal planes in directions of principal curvatures In differential geometry, the two principal curvatures at a given point of a surface are the eigenvalues of the shape operator at the point. They measure how the surface… … Wikipedia
Umbilical point — In the differential geometry of surfaces in three dimensions, umbilics or umbilical points are points which are locally spherical. At such points both principal curvatures are equal, and every tangent vector is a principal direction . Umbilic… … Wikipedia
