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Yousef Alavi
Yousef Alavi (March 19, 1928 – May 21, 2013) was an Iranian born American mathematician who specialized in combinatorics and graph theory. He received his PhD from Michigan State University in 1958. He was a professor of mathematics at Western Michigan University from 1958 until his retirement in 1996; he chaired the department from 1989 to 1992. Alavi was known for complaining that "this is highly irregular!" He was also a frequent host for Paul Erdős on his visits to Western Michigan. On one of these visits, these two things came together: he made his usual complaint at a time when Erdős and Ronald Graham were present. This sparked a discussion on what it might mean for a graph to be highly irregular, kicking off a line of joint research on highly irregular graphs through which Alavi obtained Erdős number one. In 1987, he received the first Distinguished Service Award of the Michigan Section of the Mathematical Association of America The Mathematical Association o ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Kalamazoo Gazette
The ''Kalamazoo Gazette'' is the daily newspaper in Kalamazoo, Michigan, and is part of MLive Media Group, Michigan's largest local media organization. The ''Gazette'' publishes seven days a week. Papers are available for home delivery on Thursday and Sunday. History Originally founded in 1833 by John D. Defrees as the ''Michigan Statesman and St. Joseph Chronicle'', the paper's name was shortened to the ''Michigan Statesman'' after it was purchased by Henry Gilbert. The paper became the ''Kalamazoo Gazette'' in 1837. In April 2010, the ''Gazette'' announced it would pay $1,525,000 to the City of Kalamazoo to avoid lawsuits seeking $4 million in previously awarded tax breaks related to the 2002 expansion of their downtown Kalamazoo printing facility. The 2002 expansion cost the ''Gazette'' $33 million, including $20 million in new equipment. The breaks were awarded on the condition that the ''Gazette'' maintain 175 jobs related to the expansion until 2014. On November 2, 20 ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Highly Irregular Graph
In graph theory, a highly irregular graph is a graph in which, for every vertex, all neighbors of that vertex have distinct degrees. History Irregular graphs were initially characterized by Yousef Alavi, Gary Chartrand, Fan Chung, Paul Erdős, Ronald Graham, and Ortrud Oellermann. They were motivated to define the ‘opposite’ of a regular graph, a concept which has been thoroughly studied and well understood. Locality and regularity Defining an ‘irregular graph’ was not immediately obvious. In a ''k''-regular graph, all vertices have degree ''k''. In any graph ''G'' with more than one vertex, two vertices in ''G'' must have the same degree, so an irregular graph cannot be defined as a graph with all vertices of different degrees. One may be tempted then to define an irregular graph as having all vertices of distinct degrees except for two, but these types of graphs are also well understood and thus not interesting. Graph theorists thus turned to the issue of lo ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Michigan State University Alumni
Michigan ( ) is a peninsular U.S. state, state in the Great Lakes region, Great Lakes region of the Upper Midwest, Upper Midwestern United States. It shares water and land boundaries with Minnesota to the northwest, Wisconsin to the west, Indiana and Illinois to the southwest, Ohio to the southeast, and the Canadian Provinces and territories of Canada, province of Ontario to the east, northeast and north. With a population of 10.14 million and an area of , Michigan is the List of U.S. states and territories by population, 10th-largest state by population, the List of U.S. states and territories by area, 11th-largest by area, and the largest by total area east of the Mississippi River.''i.e.'', including water that is part of state territory. Georgia (U.S. state), Georgia is the largest state by land area alone east of the Mississippi and Michigan the second-largest. The state capital is Lansing, Michigan, Lansing, while its most populous city is Detroit. The Metro Detroit r ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
2013 Deaths
This is a list of lists of deaths of notable people, organized by year. New deaths articles are added to their respective month (e.g., Deaths in ) and then linked below. 2025 2024 2023 2022 2021 2020 2019 2018 2017 2016 2015 2014 2013 2012 2011 2010 2009 2008 2007 2006 2005 2004 2003 2002 2001 2000 1999 1998 1997 1996 1995 1994 1993 1992 1991 1990 1989 1988 1987 1986 Earlier years ''Deaths in years earlier than this can usually be found in the main articles of the years.'' See also * Lists of deaths by day * Deaths by year (category) {{DEFAULTSORT:deaths by year ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Mathematical Association Of America
The Mathematical Association of America (MAA) is a professional society that focuses on mathematics accessible at the undergraduate level. Members include university A university () is an educational institution, institution of tertiary education and research which awards academic degrees in several Discipline (academia), academic disciplines. ''University'' is derived from the Latin phrase , which roughly ..., college, and high school teachers; graduate and undergraduate students; pure and applied mathematicians; computer scientists; statisticians; and many others in academia, government, business, and industry. The MAA was founded in 1915 and is headquartered at 11 Dupont in the Dupont Circle, Washington, D.C., Dupont Circle neighborhood of Washington, D.C. The organization publishes mathematics journals and books, including the ''American Mathematical Monthly'' (established in 1894 by Benjamin Finkel), the most widely read mathematics journal in the world according to re ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Erdős Number
The Erdős number () describes the "collaborative distance" between mathematician Paul Erdős and another person, as measured by authorship of mathematical papers. The same principle has been applied in other fields where a particular individual has collaborated with a large and broad number of peers. Overview Paul Erdős (1913–1996) was an influential Hungarian mathematician who, in the latter part of his life, spent a great deal of time writing papers with a large number of colleagues — more than 500 — working on solutions to outstanding mathematical problems. He published more papers during his lifetime (at least 1,525) than any other mathematician in history. (Leonhard Euler published more total pages of mathematics but fewer separate papers: about 800.) Erdős spent most of his career with no permanent home or job. He traveled with everything he owned in two suitcases, and would visit mathematicians with whom he wanted to collaborate, often unexpectedly, a ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ronald Graham
Ronald Lewis Graham (October 31, 1935July 6, 2020) was an American mathematician credited by the American Mathematical Society as "one of the principal architects of the rapid development worldwide of discrete mathematics in recent years". He was president of both the American Mathematical Society and the Mathematical Association of America, and his honors included the Leroy P. Steele Prize for lifetime achievement and election to the National Academy of Sciences. After graduate study at the University of California, Berkeley, Graham worked for many years at Bell Labs and later at the University of California, San Diego. He did important work in scheduling algorithm, scheduling theory, computational geometry, Ramsey theory, and quasi-randomness, and many topics in mathematics are named after him. He published six books and about 400 papers, and had nearly 200 co-authors, including many collaborative works with his wife Fan Chung and with Paul Erdős. Graham has been featured ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
United States
The United States of America (USA), also known as the United States (U.S.) or America, is a country primarily located in North America. It is a federal republic of 50 U.S. state, states and a federal capital district, Washington, D.C. The 48 contiguous states border Canada to the north and Mexico to the south, with the semi-exclave of Alaska in the northwest and the archipelago of Hawaii in the Pacific Ocean. The United States asserts sovereignty over five Territories of the United States, major island territories and United States Minor Outlying Islands, various uninhabited islands in Oceania and the Caribbean. It is a megadiverse country, with the world's List of countries and dependencies by area, third-largest land area and List of countries and dependencies by population, third-largest population, exceeding 340 million. Its three Metropolitan statistical areas by population, largest metropolitan areas are New York metropolitan area, New York, Greater Los Angeles, Los Angel ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Paul Erdős
Paul Erdős ( ; 26March 191320September 1996) was a Hungarian mathematician. He was one of the most prolific mathematicians and producers of mathematical conjectures of the 20th century. pursued and proposed problems in discrete mathematics, graph theory, number theory, mathematical analysis, approximation theory, set theory, and probability theory. Much of his work centered on discrete mathematics, cracking many previously unsolved problems in the field. He championed and contributed to Ramsey theory, which studies the conditions in which order necessarily appears. Overall, his work leaned towards solving previously open problems, rather than developing or exploring new areas of mathematics. Erdős published around 1,500 mathematical papers during his lifetime, a figure that remains unsurpassed. He was known both for his social practice of mathematics, working with more than 500 collaborators, and for his eccentric lifestyle; ''Time'' magazine called him "The Oddball's Oddba ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Western Michigan University
Western Michigan University (Western Michigan, Western or WMU) is a Public university, public research university in Kalamazoo, Michigan, United States. It was initially established as Western State Normal School in 1903 by Governor Aaron T. Bliss for the training of teachers. It was renamed Western Michigan University in 1957. Western is one of the eight research universities in the state of Michigan and is Carnegie Classification of Institutions of Higher Education, classified among "R2: Doctoral Universities – High research activity". The university has seven degree-granting colleges, offering 147 undergraduate degree programs, 73 master's degree programs, 30 doctoral programs, and 1 specialist degree program. It is governed by an eight-member board of regents whose members are appointed by the governor of Michigan and confirmed by the Michigan Senate for eight-year terms. The university's athletic teams compete in NCAA Division I, Division I of the National Collegiate At ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
