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P. T. Johnstone
Peter Tennant Johnstone (born December 28, 1948) is Professor of the Foundations of Mathematics at the University of Cambridge, and a fellow of St. John's College. He invented or developed a broad range of fundamental ideas in topos theory. His thesis, completed at the University of Cambridge in 1974, was entitled "Some Aspects of Internal Category Theory in an Elementary Topos". Peter Johnstone is a choral singer, having sung for over thirty years with the Cambridge University Musical Society and since 2004 with the (London) Bach Choir. Following a severe bout of COVID-19 in 2020, he was invited by the Bach Choir's musical director David Hill to provide the text for a new choral work about the pandemic which the Choir commissioned from the composer Richard Blackford; the piece, `Vision of a Garden', was performed at the Bach Choir's first post-lockdown concert in October 2021 in the Royal Festival Hall, london, and again in July 2023 in King's College Chapel, Cambridge. He is ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
University Of Cambridge
The University of Cambridge is a Public university, public collegiate university, collegiate research university in Cambridge, England. Founded in 1209, the University of Cambridge is the List of oldest universities in continuous operation, world's third-oldest university in continuous operation. The university's founding followed the arrival of scholars who left the University of Oxford for Cambridge after a dispute with local townspeople. The two ancient university, ancient English universities, although sometimes described as rivals, share many common features and are often jointly referred to as Oxbridge. In 1231, 22 years after its founding, the university was recognised with a royal charter, granted by Henry III of England, King Henry III. The University of Cambridge includes colleges of the University of Cambridge, 31 semi-autonomous constituent colleges and List of institutions of the University of Cambridge#Schools, Faculties, and Departments, over 150 academic departm ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
COVID-19
Coronavirus disease 2019 (COVID-19) is a contagious disease caused by the coronavirus SARS-CoV-2. In January 2020, the disease spread worldwide, resulting in the COVID-19 pandemic. The symptoms of COVID‑19 can vary but often include fever, fatigue, cough, breathing difficulties, anosmia, loss of smell, and ageusia, loss of taste. Symptoms may begin one to fourteen days incubation period, after exposure to the virus. At least a third of people who are infected asymptomatic, do not develop noticeable symptoms. Of those who develop symptoms noticeable enough to be classified as patients, most (81%) develop mild to moderate symptoms (up to mild pneumonia), while 14% develop severe symptoms (dyspnea, hypoxia (medical), hypoxia, or more than 50% lung involvement on imaging), and 5% develop critical symptoms (respiratory failure, shock (circulatory), shock, or organ dysfunction, multiorgan dysfunction). Older people have a higher risk of developing severe symptoms. Some complicati ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Cambridge Mathematicians
Cambridge ( ) is a city and non-metropolitan district in the county of Cambridgeshire, England. It is the county town of Cambridgeshire and is located on the River Cam, north of London. As of the 2021 United Kingdom census, the population of the City of Cambridge was 145,700; the population of the wider built-up area (which extends outside the city council area) was 181,137. (2021 census) There is archaeological evidence of settlement in the area as early as the Bronze Age, and Cambridge became an important trading centre during the Roman and Viking eras. The first town charters were granted in the 12th century, although modern city status was not officially conferred until 1951. The city is well known as the home of the University of Cambridge, which was founded in 1209 and consistently ranks among the best universities in the world. The buildings of the university include King's College Chapel, Cavendish Laboratory, and the Cambridge University Library, one of the largest l ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Living People
Purpose: Because living persons may suffer personal harm from inappropriate information, we should watch their articles carefully. By adding an article to this category, it marks them with a notice about sources whenever someone tries to edit them, to remind them of WP:BLP (biographies of living persons) policy that these articles must maintain a neutral point of view, maintain factual accuracy, and be properly sourced. Recent changes to these articles are listed on Special:RecentChangesLinked/Living people. Organization: This category should not be sub-categorized. Entries are generally sorted by family name In many societies, a surname, family name, or last name is the mostly hereditary portion of one's personal name that indicates one's family. It is typically combined with a given name to form the full name of a person, although several give .... Maintenance: Individuals of advanced age (over 90), for whom there has been no new documentation in the last ten ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Category Theorists
Category, plural categories, may refer to: General uses *Classification, the general act of allocating things to classes/categories Philosophy *Category of being * ''Categories'' (Aristotle) *Category (Kant) *Categories (Peirce) *Category (Vaisheshika) * Stoic categories *Category mistake Science *Cognitive categorization, categories in cognitive science *Statistical classification, statistical methods used to effect classification/categorization Mathematics * Category (mathematics), a structure consisting of objects and arrows * Category (topology), in the context of Baire spaces * Lusternik–Schnirelmann category, sometimes called ''LS-category'' or simply ''category'' * Categorical data, in statistics Linguistics *Lexical category, a part of speech such as ''noun'', ''preposition'', etc. *Syntactic category, a similar concept which can also include phrasal categories *Grammatical category, a grammatical feature such as ''tense'', ''gender'', etc. Other * Category (chess ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
William McGonagall
William McGonagall (March 1825 – 29 September 1902) was a Scottish poet and public performer. He gained notoriety as an poetaster, extremely bad poet who exhibited no recognition of, or concern for, his peers' opinions of his work. He wrote about 200 poems, including "The Tay Bridge Disaster" and "The Famous Tay Whale", which are widely regarded as some of the worst in English literature. Groups throughout Scotland engaged him to make poetry reading, recitations from his work, and contemporary descriptions of these performances indicate that many listeners were appreciating McGonagall's skill as a comic music hall character. Collections of his verse remain popular, with several volumes available today. McGonagall has been lampooned as the worst poet in British history. The chief criticisms are that he was deaf to poetic metaphor and unable to scansion, scan correctly. His only apparent understanding of poetry was his belief that it needed to rhyme. McGonagall's fame stems fro ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
George Gilfillan
__NOTOC__ George Gilfillan (30 January 1813 – 13 August 1878) was a Scottish author and poet. One of the spasmodic poets, Gilfillan was also an editor and commentator, with memoirs, critical dissertations in many editions of earlier British poetry. Early life and education George Gilfillan was born at Comrie, Perthshire, the eleventh of twelve children. His father, the Rev. Samuel Gilfillan, the author of some theological works, was for many years minister of a Secession congregation. His mother, Rachel Barlas, the daughter of another Secession minister, was a notable beauty often spoken of as "The Star of the North". In 1825 he went to study at the University of Glasgow, where his classmates included John Eadie, William Hanna and Archibald Campbell Tait, the future Archbishop of Canterbury. In 1833 he studied for a year in Mid Calder before moving on to Edinburgh where he received warm encouragement from the professor of moral philosophy, John Wilson, better known as Chri ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Richard Blackford
Richard Blackford (born 13 January 1954 in London, England) is an English composer. Biography Richard Blackford PhD studied composition with John Lambert at the Royal College of Music and conducting with Norman Del Mar. He was awarded the Mendelssohn Scholarship and the Tagore Gold Medal. He spent a number of years as Hans Werner Henze's assistant in Italy on a Leverhulme scholarship, where he received his first commissions while immersed in the European avant-garde. He returned to London in 1977 to turn his sights to the dramatic potential of music, combining teaching at LAMDA with commissions for theatre scores along with concert commissions. After becoming first Composer in Residence at Balliol College, Oxford, he was commissioned to write the opera ''Metamorphoses'' for the Centenary of the Royal College of Music. Further collaborations with Ted Hughes and Tony Harrison led to international film and theatre projects, including ''The Prince's Play'' and ''Fram'' at the Royal ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
David Hill (choral Director)
David Hill, (born on 13 May 1957 in Carlisle, Cumberland) is a choral conductor and organist. Since July 2013, he is Professor Adjunct of Choral Conducting and Principal Conductor of Yale Schola Cantorum at the Yale Institute of Sacred Music. He has been Musical Director of The Bach Choir, London, since April 1998. (He is also President of Bath Bach Choir). He also holds the positions Chief Conductor of the Southern Sinfonia, Music Director of the Leeds Philharmonic Society, and Associate Conductor of the Bournemouth Symphony Orchestra. Hill is President of the Incorporated Association of Organists, succeeding Catherine Ennis. Media interest He had a part in ''Coronation Street'' in 1970 where he broke into the vestry to play the organ and was befriended by Ena Sharples. Education Hill was educated at Chetham's School of Music, Manchester, and St John's College, Cambridge, where he was Organ Scholar under George Guest. He spent two years from 1980 as Sub-Organist at D ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Bach Choir
The Bach Choir is a large independent musical organisation founded in London, England in 1876 to give the first performance of J. S. Bach's '' Mass in B minor'' in Britain. The choir has around 240 active members. Directed by David Hill ( Yale Schola Cantorum/ Bournemouth Symphony Orchestra) it regularly performs and records across London and the UK, including at the Royal Festival Hall, Royal Albert Hall and Abbey Road Studios. The choir's patron is King Charles III. Its conductor laureate was David Willcocks, who was the choir's musical director from 1960 to 1998. Other musical directors have included Charles Villiers Stanford, Ralph Vaughan Williams and Reginald Jacques. In 2013, John Rutter was appointed president of the choir, following the death of Leopold David de Rothschild in 2012. Its vice presidents are Janet Baker, Felicity Lott, Roderick Williams and Sam Gordon Clark. The Bach Choir has performed for many film scores, including '' Kingdom of Heaven'', ''Prometh ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Frank Adams
John Frank Adams (5 November 1930 – 7 January 1989) was a British mathematician, one of the major contributors to homotopy theory. Life He was born in Woolwich, a suburb in south-east London, and attended Bedford School. He had a younger brother, Michael Adams, who rose to the rank of Air Vice-Marshal in the Royal Air Force. He began his academic career at Trinity College, Cambridge, as a student of Abram Besicovitch, but soon switched to algebraic topology. He received his PhD from the University of Cambridge in 1956. His thesis, written under the direction of Shaun Wylie, was titled ''On spectral sequences and self-obstruction invariants''. He held the Fielden Chair at the University of Manchester (1964–1970), and became Lowndean Professor of Astronomy and Geometry at the University of Cambridge (1970–1989). He was elected a Fellow of the Royal Society in 1964. His interests included mountaineering—he would demonstrate how to climb right round a table at partie ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Elementary Topos
In mathematics, a topos (, ; plural topoi or , or toposes) is a category that behaves like the category of sheaves of sets on a topological space (or more generally, on a site). Topoi behave much like the category of sets and possess a notion of localization. The Grothendieck topoi find applications in algebraic geometry, and more general elementary topoi are used in logic. The mathematical field that studies topoi is called topos theory. Grothendieck topos (topos in geometry) Since the introduction of sheaves into mathematics in the 1940s, a major theme has been to study a space by studying sheaves on a space. This idea was expounded by Alexander Grothendieck by introducing the notion of a "topos". The main utility of this notion is in the abundance of situations in mathematics where topological heuristics are very effective, but an honest topological space is lacking; it is sometimes possible to find a topos formalizing the heuristic. An important example of this programm ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
