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Gertrude Blanch
Gertrude Blanch (2 February 1897, in Kolno, Russian Empire (now Poland) – 1 January 1996) was an American mathematician who did pioneering work in numerical analysis and computation. She was a leader of the Mathematical Tables Project in New York from its beginning. She worked later as the assistant director and leader of the Numerical Analysis at UCLA computing division and was head of mathematical research for the Aerospace Research Laboratory at Wright-Patterson Air Force Base in Dayton, Ohio. Early years and education Blanch was born on 2 February 1897 as Gittel Kaimowitz in Kolno to Wolfe Kaimowitz and Dora Blanc. Kolno was historically a part of Poland, but was part of the Russian Empire at the time. Blanch was the youngest of seven children. Wolfe Kaimowitz emigrated to the United States, and in 1907, Dora Blanc, ten-year-old Blanch, and one other daughter joined him in New York. Biography on p. 83–89 of thSupplementary MaterialaAMS Blanch attended schools within Bro ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Kolno
Kolno is a town in northeastern Poland, located in the Podlaskie Voivodeship, about 150 km northeast of Warsaw. It is the seat of Kolno County, and the seat of the smaller administrative district ( gmina) called Gmina Kolno, but it is not part of this district, as the town has gmina status in its own right. Kolno has 10,730 inhabitants (2007). History Lechitic (early Polish) settlement developed from the 8th century, and a stronghold was erected in the 8th or 9th century. In the 10th century it became part of the emerging Polish state. As a result of the fragmentation of Piast-ruled Poland, it formed part of the provincial Duchy of Masovia, before it was reincorporated directly to the Polish Crown. Kolno was first mentioned in 1222, and received town rights from Duke Janusz III of Masovia in 1425. Major economic expansion took place in the 16th century, with more trade and crafts. Kolno was a royal town of the Polish Crown, administratively located in the Masovian Voiv ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Algebraic Geometry
Algebraic geometry is a branch of mathematics, classically studying zeros of multivariate polynomials. Modern algebraic geometry is based on the use of abstract algebraic techniques, mainly from commutative algebra, for solving geometrical problems about these sets of zeros. The fundamental objects of study in algebraic geometry are algebraic varieties, which are geometric manifestations of solutions of systems of polynomial equations. Examples of the most studied classes of algebraic varieties are: plane algebraic curves, which include lines, circles, parabolas, ellipses, hyperbolas, cubic curves like elliptic curves, and quartic curves like lemniscates and Cassini ovals. A point of the plane belongs to an algebraic curve if its coordinates satisfy a given polynomial equation. Basic questions involve the study of the points of special interest like the singular points, the inflection points and the points at infinity. More advanced questions involve the topology ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Transcendental Function
In mathematics, a transcendental function is an analytic function that does not satisfy a polynomial equation, in contrast to an algebraic function. In other words, a transcendental function "transcends" algebra in that it cannot be expressed algebraically. Examples of transcendental functions include the exponential function, the logarithm, and the trigonometric functions. Definition Formally, an analytic function ''f''(''z'') of one real or complex variable ''z'' is transcendental if it is algebraically independent of that variable. This can be extended to functions of several variables. History The transcendental functions sine and cosine were trigonometric tables, tabulated from physical measurements in antiquity, as evidenced in Greece (Hipparchus) and India (jya and koti-jya). In describing Ptolemy's table of chords, an equivalent to a table of sines, Olaf Pedersen wrote: A revolutionary understanding of these circular functions occurred in the 17th century and was expli ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Computer (job Description)
The term "computer", in use from the early 17th century (the first known written reference dates from 1613), meant "one who computes": a person performing mathematical calculations, before electronic computers became commercially available. Alan Turing described the "human computer" as someone who is "supposed to be following fixed rules; he has no authority to deviate from them in any detail." Teams of people, often women from the late nineteenth century onwards, were used to undertake long and often tedious calculations; the work was divided so that this could be done in parallel. The same calculations were frequently performed independently by separate teams to check the correctness of the results. Since the end of the 20th century, the term "human computer" has also been applied to individuals with prodigious powers of mental arithmetic, also known as mental calculators. Origins in sciences Astronomers in Renaissance times used that term about as often as they called thems ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Irene Stegun
Irene Ann Stegun (February 9, 1919 – January 27, 2008) was an American mathematician at the National Bureau of Standards (NBS, now the National Institute of Standards and Technology) who edited a classic book of mathematical tables called ''A Handbook of Mathematical Functions'', widely known as ''Abramowitz and Stegun''. Early life and education Stegun was born in Yonkers, New York, the daughter of Richard Stegun and Regina Skakandi Stegun. Her parents were both immigrants from central Europe. Her father owned a restaurant. She trained as a teacher, and later completed a master's degree in mathematics at Columbia University. Career Stegun began her mathematical career during the Second World War. After teaching mathematics at a Catholic school in New York, she joined the Planning Committee of the Mathematical Tables Project of the WPA. In that role, she learned the basics of numerical analysis from the committee's chair, Gertrude Blanch. While working at the Mathematics ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Jenny Rosenthal Bramley
Jenny Rosenthal Bramley (July 31, 1909 – May 26, 1997) was a Russian-born American physicist. She holds numerous patents on Electroluminescence and Electro-optics and is cited by the IEEE as being "well known for her innovative work in lasers.” She was the second woman elected as a fellow of the IEEE. Personal life Bramley was born Jenny Rosenthal in Moscow on July 31, 1909. Her parents were Lithuanian, and she and her family left Russia as part of a hostage exchange between Lithuania and the Soviet Union. She attended high school in Berlin and earned her bachelor's degree from the University of Paris in 1926 at age 16. She spoke English, Russian, French, and German and used her translation skills many times at professional meetings and to translate technical articles. Bramley received both a master's degree in 1927 and a doctorate in 1929 at age 19 from New York University (NYU). University officials at NYU claim she became the first woman to receive a Ph.D in physics f ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ida Rhodes
Ida Rhodes (born Hadassah Itzkowitz; May 15, 1900 – February 1, 1986) was an American mathematician who became a member of the clique of influential women at the heart of early computer development in the United States. Childhood Hadassah Itzkowitz was born in a Jewish village Kamianets-Podilskyi between Nemyriv and Tulchyn in Ukraine on May 15, 1900. She was 13 years old in 1913 when her parents, David and Bessie () Itzkowitz, brought her to the United States. Her name was changed upon entering the country to Ida Itzkowitz. Career Rhodes was awarded the New York State Cash Scholarship and a Cornell University Tuition Scholarship and began studying mathematics at Cornell University only six years after coming to the United States, from 1919–1923. During her time at Cornell University she worked as a nurse's aid at Ithaca City Hospital. She was elected to the honorary organizations Phi Beta Kappa (1922) and Phi Kappa Phi (1923). She received her BA in mathematics in Febr ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Institute Of Electrical And Electronics Engineers
The Institute of Electrical and Electronics Engineers (IEEE) is a 501(c)(3) professional association for electronic engineering and electrical engineering (and associated disciplines) with its corporate office in New York City and its operations center in Piscataway, New Jersey. The mission of the IEEE is ''advancing technology for the benefit of humanity''. The IEEE was formed from the amalgamation of the American Institute of Electrical Engineers and the Institute of Radio Engineers in 1963. Due to its expansion of scope into so many related fields, it is simply referred to by the letters I-E-E-E (pronounced I-triple-E), except on legal business documents. , it is the world's largest association of technical professionals with more than 423,000 members in over 160 countries around the world. Its objectives are the educational and technical advancement of electrical and electronic engineering, telecommunications, computer engineering and similar disciplines. History Orig ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Mathematical Tables Project
The Mathematical Tables Project was one of the largest and most sophisticated computing organizations that operated prior to the invention of the digital electronic computer. Begun in the United States in 1938 as a project of the Works Progress Administration (WPA), it employed 450 unemployed clerks to tabulate higher mathematical functions, such as exponential functions, logarithms, and trigonometric functions. These tables were eventually published in a 28-volume set by Columbia University Press. History The group was led by a group of mathematicians and physicists, most of whom had been unable to find professional work during the Great Depression. The mathematical leader was Gertrude Blanch, who had just finished her doctorate in mathematics at Cornell University. She had been unable to find a university position and was working at a photographic company before joining the project. The administrative director was Arnold Lowan, who had a degree in physics from Columbia Universit ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Works Progress Administration
The Works Progress Administration (WPA; renamed in 1939 as the Work Projects Administration) was an American New Deal agency that employed millions of jobseekers (mostly men who were not formally educated) to carry out public works projects, including the construction of public buildings and roads. It was set up on May 6, 1935, by presidential order, as a key part of the Second New Deal. The WPA's first appropriation in 1935 was $4.9 billion (about $15 per person in the U.S., around 6.7 percent of the 1935 GDP). Headed by Harry Hopkins, the WPA supplied paid jobs to the unemployed during the Great Depression in the United States, while building up the public infrastructure of the US, such as parks, schools, and roads. Most of the jobs were in construction, building more than 620,000 miles (1,000,000 km) of streets and over 10,000 bridges, in addition to many airports and much housing. The largest single project of the WPA was the Tennessee Valley Authority. At its pe ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Arnold Lowan
Arnold may refer to: People * Arnold (given name), a masculine given name * Arnold (surname), a German and English surname Places Australia * Arnold, Victoria, a small town in the Australian state of Victoria Canada * Arnold, Nova Scotia United Kingdom * Arnold, East Riding of Yorkshire * Arnold, Nottinghamshire United States * Arnold, California, in Calaveras County * Arnold, Carroll County, Illinois * Arnold, Morgan County, Illinois * Arnold, Iowa * Arnold, Kansas * Arnold, Maryland * Arnold, Mendocino County, California * Arnold, Michigan * Arnold, Minnesota * Arnold, Missouri * Arnold, Nebraska * Arnold, Ohio * Arnold, Pennsylvania * Arnold, Texas * Arnold, Brooke County, West Virginia * Arnold, Lewis County, West Virginia * Arnold, Wisconsin * Arnold Arboretum of Harvard University, Massachusetts * Arnold Township, Custer County, Nebraska Other uses * Arnold (automobile), a short-lived English car * Arnold of Manchester, a former English coachbuilder * Arnold (band ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Brooklyn College
, mottoeng = Nothing without great effort , established = , parent = CUNY , type = Public university , endowment = $98.0 million (2019) , budget = $123.96 million (2021) , president = Michelle Anderson , provost = Anne Lopes , faculty = 534 full-time,878 part-time (2018) , students = 17,811 (2019) , undergrad = 14,970 (2019) , postgrad = 2,841 (2019) , city = Brooklyn , state = New York, New York , country = United States , coordinates = , campus = Urban, , colors = Maroon, gold, & grey , free_label = , free = , athletics_affiliations = , sports_nickname = Bulldogs , mascot = Buster the Bulldog , website = , logo = Brooklyn Co ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
