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Topic: Incidence mathematics

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	Incidence matrix -- Facts, Info, and Encyclopedia article (Site not responding. Last check: 2007-10-08)
		The incidence matrix is related to the (additional info and facts about adjacency matrix) adjacency matrix of its line graphgraph by the following theorem:
		where is the adjacency matrix of the line graph of, is incidence matrix, and is the (A scalar matrix in which all of the diagonal elements are unity) identity matrix of dimension q.
		In this case the incidence matrix is also a (additional info and facts about biadjacency matrix) biadjacency matrix of the (additional info and facts about Levi graph) Levi graph of the structure.
	www.absoluteastronomy.com /encyclopedia/i/in/incidence_matrix.htm (129 words)

	ipedia.com: Incidence matrix Article (Site not responding. Last check: 2007-10-08)
		In mathematics, the incidence matrix of a graph G is a p × q matrix where p and q are the number of vertices and edges respectively, such that if the vertex and edge are incident and 0 otherwise.
		The incidence matrix is related to the adjacency matrix of a graph by the following theorem:
		where and are the adjacency matrix and incidence matrix respectively and is the identity matrix of dimension q.
	www.ipedia.com /incidence_matrix.html (156 words)

	MedlinePlus Medical Encyclopedia: Mathematics disorder
		Mathematics disorder is a condition characterized by mathematical ability substantially below expectation given a child's age, general intelligence, and education.
		Mathematical disorder may appear in combination with reading disorder, developmental coordination disorder, and mixed receptive-expressive language disorder.
		Standardized tests are of greatest value in assessing the mathematical ability, as is corroborating history from grades and class performance.
	www.nlm.nih.gov /medlineplus/ency/article/001534.htm (320 words)

	Office of Communications (Site not responding. Last check: 2007-10-08)
		November 6, 2005 ABCNews.com Temple mathematics professor John Allen Paulos writes that those who are against abortion in all cases might reconsider their point of view if they were faced with the implications of that absolute position.
		The Guardian Mathematics' John Allen Paulos analyzes combinatorial literature, both past efforts by Oulipo (a small group of primarily French writers, mathematicians and academics devoted to exploring mathematical and combinatorial techniques in literature) and technologically aided ones using Google, in his recent "Last Word" column in the UK's "The Guardian."
		Heuer and his colleagues at Temple's Speech Language Hearing Center are part of a growing number of speech pathology clinics and programs around the country working with gender-reassignment patients to alter the pitch, loudness, quality and resonance of their voices.
	www.temple.edu /news_media/in_news.html (15093 words)

	Diamond Theory: Symmetry in Binary Spaces (Site not responding. Last check: 2007-10-08)
		The following diagram is a rough sketch of how diamond theory is related to some other fields of mathematics.
		This website, which updates the booklet, is written for mathematicians and college students of mathematics.
		The quotation is from Robin Hartshorne, the author of Algebraic Geometry, in "Teaching Geometry According to Euclid," Notices of the American Mathematical Society, April 2000.
	m759.freeservers.com (1917 words)

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		How much teaching time is devoted to, say, mathematics?
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	www.nationmaster.com /index.php (3037 words)

	ITTC Publications
		Duncan; Encyclopedia of Mathematics; Kluwer Academic Publishing Co., 2000, pp.
		T.E. Duncan; Fourth International Joint Meeting of the American Mathematical Society and the Sociedad Matematica Mexicana, University of North Texas; Denton, Texas, May 1999.
		T.E. Duncan; Proceedings Symposa Pure Math, 64: Differential Geometry and Control, G. Ferreyra, R. Gardner, H. Hermes, H. Sussman (eds.); American Mathematics Society, 1999, pp.
	www.ittc.ku.edu /publications/index.phtml (10251 words)

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