transversals

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• Transversal (instrument making) — Transversals are a geometric construction on a scientific instrument to allow a graduation to be read to a finer degree of accuracy. Transversals have been replaced in modern times by vernier scales. Contents 1 History 2 Linear transversals 3… …   Wikipedia

• Hypergraph — An example hypergraph, with X = {v1,v2,v3,v4,v5,v6,v7} and E = {e1,e2,e3,e4} = {{v1,v2,v3}, {v2,v3} …   Wikipedia

• Problems in Latin squares — In mathematics, the theory of Latin squares is an active research area with many open problems. As in other areas of mathematics, such problems are often made public at professional conferences and meetings. Problems posed here appeared in, for… …   Wikipedia

• Dividing engine — at the Michigan Museum of Surveying A dividing engine is a device specifically employed to mark graduations on measuring instruments. History There has always been a need for accurate measuring instruments. Whether it is a linear device such as a …   Wikipedia

• Octant (instrument) — Octant. This instrument, labelled Crichton London, Sold by J Berry, Aberdeen, appears to have an ebony frame with ivory scale, vernier and signature plate. The index arm and mirror supports are brass. Rather than use a sighting telescope, this… …   Wikipedia

• Трансверсаль — Не путать с трансверсалью треугольника. Содержание 1 Определение 1.1 Пример …   Википедия

• Skopje — Скопје   City   City of Skopje Град Ско …   Wikipedia

• Lazare Carnot — President of the National Convention In office May 20, 1794 – June 4, 1794 Preceded by Robert Lindet S …   Wikipedia

• Matroid — In combinatorics, a branch of mathematics, a matroid (  /ˈmeɪ …   Wikipedia

• Discrete geometry — A collection of circles and the corresponding unit disk graph Combinatorial geometry redirects here. The term combinatorial geometry is also used in the theory of matroids to refer to a simple matroid, especially in older texts. Discrete geometry …   Wikipedia

• Strong coloring — [ This cubic graph is strongly 4 colorable. The 4 sized partitions are 35, but only this 7 partitions are topologically unique.] In graph theory, a strong coloring, with respect to a partition of the vertices into (disjoint) subsets of equal… …   Wikipedia