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Of, relating to, or being any of several modern geometries that are not based on the postulates of Euclid.


(ˌnɒn yuˈklɪd i ən)

differing from the postulates of Euclid or based upon postulates other than those of Euclid: non-Euclidean geometry.
References in classic literature ?
This distinguished scientist has expounded his views in a book entitled "Verschwinden und Seine Theorie," which has attracted some attention, "particularly," says one writer, "among the followers of Hegel, and mathematicians who hold to the actual existence of a so- called non-Euclidean space--that is to say, of space which has more dimensions than length, breadth, and thickness--space in which it would be possible to tie a knot in an endless cord and to turn a rubber ball inside out without 'a solution of its continuity,' or in other words, without breaking or cracking it.
To understand its defining characteristics in greater depth we study them in Euclidean geometry and in a particular non-Euclidean geometry system known as 'taxicab geometry'.
Kant's critical philosophy, perhaps the only serious rival to realism in the minds of some scientists, crashed and burned in the nineteenth century with the development of non-Euclidean geometries and their later incorporation into the non-Newtonian physics of relativity in the early twentieth century.
Smarandache introduced the degree of negation of an axiom or of a theorem in geometry: Smarandache geometries (1969), which can be partially Euclidean and partially non-Euclidean.
Pendulum-like pieces reminiscent of Lescher's earlier work hung in the back; a polished metallic spear-like form jutted down from the ceiling and others pierced the wall; the non-Euclidean form of a flat basalt floor piece with relaxed metric requirements that do not form a perfect figure eight was highlighted by the work's title, Nao Euclidiana, 2013; on the back wall was Livro (Book), 2013, two jacaranda-wood blocks with a thin strip of brass shining between them.
New York designer Jill Malek's Voyageur wallpaper takes non-Euclidean geometry to the next level, with a range of papers printed with lines radiating from points, like a compass gone wild.
There was also a case, once reported in a staid medical journal, of a Birkenhead man who, after suffering an electric shock from a faulty fridge, found he could perform phenomenal feats of mental computation and became an expert in the fields of integral calculus, non-Euclidean geometry and metamathematics.
If we set out to solve a problem by non-euclidean geometry, we don't switch to euclidean postulates.
The introduction, in the study guide to the Subset II exam, states that candidates should "demonstrate an understanding of the foundations of the geometry contained in the Mathematics Content Standards for California Public Schools," "demonstrate an understanding of axiomatic systems and different forms of logical arguments," and "understand, apply, and prove theorems relating to a variety of topics in two- and three-dimensional geometry, including coordinate, synthetic, non-Euclidean, and transformational geometry.
In non-Euclidean demand environments, location problems have different solutions that are sensitive to both distance and direction.
However in geodesy, navigation, cartography or astronomy there are many examples when non-Euclidean notions differ essentially from their flat analogues.
The topics are non-Euclidean geometry, crossroads between hyperbolic geometry and number theory; origamis in TeichmA1/4ller space; 3-manifold topology; globally symmetric spaces; the geometry of the representation spaces in SU(2); the algorithmic construction and recognition of hyperbolic 3-manifolds, links, and graphs; and asymptotic geometry.