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Schensted Algorithm
Craige Schensted (), who formally changed his name to Ea Ea, was an American physicist and mathematician who first formulated the insertion algorithm that defines the Robinson–Schensted correspondence. Under a different form, that correspondence had earlier been described by Gilbert de Beauregard Robinson in 1938, but it is due to the Schensted insertion algorithm that the correspondence has become widely known in combinatorics. Schensted also designed several board games including *Star, Star, and Y. In 1995, he changed his name to Ea, the Babylonian name for the Sumerian god Enki, interested in the god's creative and empathetic nature. This became Ea Ea in 1999, in anticipation of the millenium computer glitches. He lived for forty years on Peaks Island in Portland, Maine Portland is the List of municipalities in Maine, most populous city in the U.S. state of Maine and the county seat, seat of Cumberland County, Maine, Cumberland County. Portland's population was 6 ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Robinson–Schensted Correspondence
In mathematics, the Robinson–Schensted correspondence is a bijective correspondence between permutations and pairs of standard Young tableaux of the same shape. It has various descriptions, all of which are of algorithmic nature, it has many remarkable properties, and it has applications in combinatorics and other areas such as representation theory. The correspondence has been generalized in numerous ways, notably by Knuth to what is known as the Robinson–Schensted–Knuth correspondence, and a further generalization to pictures by Zelevinsky. The simplest description of the correspondence is using the Schensted algorithm , a procedure that constructs one tableau by successively inserting the values of the permutation according to a specific rule, while the other tableau records the evolution of the shape during construction. The correspondence had been described, in a rather different form, much earlier by Robinson , in an attempt to prove the Littlewood–Richardson rule. T ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Canadian Journal Of Mathematics
The ''Canadian Journal of Mathematics'' () is a bimonthly mathematics journal published by the Canadian Mathematical Society. It was established in 1949 by H. S. M. Coxeter and G. de B. Robinson. The current editors-in-chief of the journal are Henry Kim and Robert McCann. The journal publishes articles in all areas of mathematics. See also * Canadian Mathematical Bulletin The ''Canadian Mathematical Bulletin'' () is a mathematics journal, established in 1958 and published quarterly by the Canadian Mathematical Society. The current editors-in-chief of the journal are Antonio Lei and Javad Mashreghi. The journal p ... References External links * Research Journals, Canadian Mathematical Society University of Toronto Press academic journals Mathematics journals Academic journals established in 1949 Bimonthly journals Multilingual journals Cambridge University Press academic journals Academic journals associated with learned and professional societies of Cana ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
People From Portland, Maine
The term "the people" refers to the public or common mass of people of a polity. As such it is a concept of human rights law, international law as well as constitutional law, particularly used for claims of popular sovereignty. In contrast, a people is any plurality of persons considered as a whole. Used in politics and law, the term "a people" refers to the collective or community of an ethnic group or nation. Concepts Legal Chapter One, Article One of the Charter of the United Nations states that "peoples" have the right to self-determination. Though the mere status as peoples and the right to self-determination, as for example in the case of Indigenous peoples (''peoples'', as in all groups of indigenous people, not merely all indigenous persons as in ''indigenous people''), does not automatically provide for independent sovereignty and therefore secession. Indeed, judge Ivor Jennings identified the inherent problems in the right of "peoples" to self-determination, as i ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
21st-century American Mathematicians
File:1st century collage.png, From top left, clockwise: Jesus is crucified by Roman authorities in Judaea (17th century painting). Four different men ( Galba, Otho, Vitellius, and Vespasian) claim the title of Emperor within the span of a year; The Great Fire of Rome (18th-century painting) sees the destruction of two-thirds of the city, precipitating the empire's first persecution against Christians, who are blamed for the disaster; The Roman Colosseum is built and holds its inaugural games; Roman forces besiege Jerusalem during the First Jewish–Roman War (19th-century painting); The Trưng sisters lead a rebellion against the Chinese Han dynasty (anachronistic depiction); Boudica, queen of the British Iceni leads a rebellion against Rome (19th-century statue); Knife-shaped coin of the Xin dynasty., 335px rect 30 30 737 1077 Crucifixion of Jesus rect 767 30 1815 1077 Year of the Four Emperors rect 1846 30 3223 1077 Great Fire of Rome rect 30 1108 1106 2155 Boudic ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Year Of Birth Missing (living People)
A year is a unit of time based on how long it takes the Earth to orbit the Sun. In scientific use, the tropical year (approximately 365 solar days, 5 hours, 48 minutes, 45 seconds) and the sidereal year (about 20 minutes longer) are more exact. The modern calendar year, as reckoned according to the Gregorian calendar, approximates the tropical year by using a system of leap years. The term 'year' is also used to indicate other periods of roughly similar duration, such as the lunar year (a roughly 354-day cycle of twelve of the Moon's phasessee lunar calendar), as well as periods loosely associated with the calendar or astronomical year, such as the seasonal year, the fiscal year, the academic year, etc. Due to the Earth's axial tilt, the course of a year sees the passing of the seasons, marked by changes in weather, the hours of daylight, and, consequently, vegetation and soil fertility. In temperate and subpolar regions around the planet, four seasons a ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
American Board Game Designers
American(s) may refer to: * American, something of, from, or related to the United States of America, commonly known as the "United States" or "America" ** Americans, citizens and nationals of the United States of America ** American ancestry, people who self-identify their ancestry as "American" ** American English, the set of varieties of the English language native to the United States ** Native Americans in the United States, indigenous peoples of the United States * American, something of, from, or related to the Americas, also known as "America" ** Indigenous peoples of the Americas * American (word), for analysis and history of the meanings in various contexts Organizations * American Airlines, U.S.-based airline headquartered in Fort Worth, Texas * American Athletic Conference, an American college athletic conference * American Recordings (record label), a record label that was previously known as Def American * American University, in Washington, D.C. Sports teams S ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Cambridge University Press
Cambridge University Press was the university press of the University of Cambridge. Granted a letters patent by King Henry VIII in 1534, it was the oldest university press in the world. Cambridge University Press merged with Cambridge Assessment to form Cambridge University Press and Assessment under Queen Elizabeth II's approval in August 2021. With a global sales presence, publishing hubs, and offices in more than 40 countries, it published over 50,000 titles by authors from over 100 countries. Its publications include more than 420 academic journals, monographs, reference works, school and university textbooks, and English language teaching and learning publications. It also published Bibles, runs a bookshop in Cambridge, sells through Amazon, and has a conference venues business in Cambridge at the Pitt Building and the Sir Geoffrey Cass Sports and Social Centre. It also served as the King's Printer. Cambridge University Press, as part of the University of Cambridge, was a ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Portland, Maine
Portland is the List of municipalities in Maine, most populous city in the U.S. state of Maine and the county seat, seat of Cumberland County, Maine, Cumberland County. Portland's population was 68,408 at the 2020 census. The Portland metropolitan area, Maine, Greater Portland metropolitan area has a population of approximately 550,000 people. Historically tied to commercial shipping, the marine economy, and light industry, Portland's economy in the 21st century relies mostly on the service sector. The Port of Portland (Maine), Port of Portland is the second-largest tonnage seaport in the New England area as of 2019. The city seal depicts a Phoenix (mythology), phoenix rising from ashes, a reference to Portland's recovery from four devastating fires. Portland was named after the English Isle of Portland. In turn, the city of Portland, Oregon, was named after Portland, Maine. The word ''Portland'' is derived from the Old English word ''Portlanda'', which means "land surrounding a ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Gilbert De Beauregard Robinson
Gilbert de Beauregard Robinson, MBE (3 June 1906 – 8 April 1992) was a Canadian mathematician most famous for his work on combinatorics and representation theory of the symmetric groups, including the Robinson-Schensted algorithm. Biography Gilbert Robinson was born in Toronto in 1906. He then attended St. Andrew's College and graduated from the University of Toronto in 1927. He received his Ph.D. at Cambridge where his advisor was group theorist Alfred Young. He then joined the Mathematics Department in Toronto where he served until his retirement in 1971, except for a period of wartime service in Ottawa. Robinson specialized in the study of the symmetric groups on which he became a recognized authority. In 1938 he formulated, in a paper studying the Littlewood–Richardson rule, a correspondence that would later become known as the Robinson-Schensted correspondence. He wrote some forty papers on the topic of symmetric groups. He also published ''The Foundations of Geomet ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Peaks Island, Maine
Peaks Island is the most populous island in Casco Bay, Maine. It is part of the city of Portland and about from downtown. The island is served by Casco Bay Lines and has its own elementary school, library, and police station. It is the only island in Casco Bay served by car ferries. While small, the island has a variety of businesses, including an ice cream parlor, restaurant, grocery store, kayak rentals, golf cart rentals, art galleries, the Fifth Maine Regiment Museum, and the Umbrella Cover Museum. The island was originally known as Pond Island. It became Michael's Island after Michael Mitton was given the island on a 60-year lease by his father-in-law, George Cleeve. It was subsequently named Munjoy's Island, for George Munjoy, and Palmer's Island, for Munjoy's son-in-law John Palmer. [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Year 2000 Problem
The term year 2000 problem, or simply Y2K, refers to potential computer errors related to the Time formatting and storage bugs, formatting and storage of calendar data for dates in and after the year 2000. Many Computer program, programs represented four-digit years with only the final two digits, making the year 2000 indistinguishable from 1900. Computer systems' inability to distinguish dates correctly had the potential to bring down worldwide infrastructures for computer-reliant industries. In the years leading up to the turn of the millennium, the public gradually became aware of the "Y2K scare", and individual companies predicted the global damage caused by the bug would require anything between $400 million and $600 billion to rectify. A lack of clarity regarding the potential dangers of the bug led some to stock up on food, water, and firearms, purchase backup generators, and withdraw large sums of money in anticipation of a computer-induced Global catastrophic risk, ap ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
