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Zehnder is a German-language surname, mostly Swiss in origin: *Zehnder (surname) It may also refer to the following: *Conley–Zehnder theorem, a mathematical theorem named after Charles C. Conley and Eduard Zehnder * Mach–Zehnder interferometer, a device used in physics * Egon Zehnder, a global executive search firm based in Switzerland *Zehnder Confair Zehnder Harry "Dick" Confair (January 11, 1906 – January 26, 1982) was an American politician from Pennsylvania who served as a Republican member of the Pennsylvania State Senate for the 24th district from 1959 to 1968 and the 23rd district f ..., American politician * Zehnder's, a large restaurant in Frankenmuth, Michigan {{disambig ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Zehnder (surname)
Zehnder is a German-language German ( ) is a West Germanic language mainly spoken in Central Europe. It is the most widely spoken and official or co-official language in Germany, Austria, Switzerland, Liechtenstein, and the Italian province of South Tyrol. It is also a c ... surname. Notable people of this surname include the following: * Alexander Zehnder (born 1946), Swiss microbiologist * Beat Zehnder (born 1966), Swiss Formula One engineer * Bruno Zehnder (1945–1997), Swiss penguin photographer * Cinzia Zehnder (born 1997), Swiss professional association footballer * Eduard Zehnder, (born 1940), Swiss mathematician * Eugen Zehnder (1917–1991), highly decorated German soldier in World War II * Gina Zehnder (born 1995), Swiss ice dancer * Gladys Zender (born 1939), Peruvian model, Miss Universe 1957 * Jean-Claude Zehnder (born 1941), Swiss organist and musicologist * Josef Zehnder (born 1944), Swiss ski jumper * Kaspar Zehnder (born 1970), Swiss conductor and flautist * ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Conley–Zehnder Theorem
In mathematics, the Conley–Zehnder theorem, named after Charles C. Conley and Eduard Zehnder, provides a lower bound for the number of fixed points of Hamiltonian diffeomorphisms of standard symplectic tori in terms of the topology of the underlying tori. The lower bound is one plus the cup-length of the torus (thus 2n+1, where 2n is the dimension of the considered torus), and it can be strengthen to the rank of the homology of the torus (which is 22n) provided all the fixed points are non-degenerate, this latter condition being generic in the C1-topology. The theorem was conjectured by Vladimir Arnold, and it was known as the Arnold conjecture on fixed points of symplectomorphisms. Its validity was later extended to more general closed symplectic manifolds by Andreas Floer Andreas Floer (; 23 August 1956 – 15 May 1991) was a German mathematician who made seminal contributions to symplectic topology, and mathematical physics, in particular the invention of Floer homology. ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Mach–Zehnder Interferometer
The Mach–Zehnder interferometer is a device used to determine the relative phase shift variations between two collimated beams derived by splitting light from a single source. The interferometer has been used, among other things, to measure phase shifts between the two beams caused by a sample or a change in length of one of the paths. The apparatus is named after the physicists Ludwig Mach (the son of Ernst Mach) and Ludwig Zehnder; Zehnder's proposal in an 1891 article was refined by Mach in an 1892 article. Demonstrations of Mach–Zehnder interferometry with particles other than photons (particles of light) had been demonstrated as well in multiple experiments. The versatility of the Mach–Zehnder configuration has led to its being used in a wide range of fundamental research topics in quantum mechanics, including studies on counterfactual definiteness, quantum entanglement, quantum computation, quantum cryptography, quantum logic, Elitzur–Vaidman bomb tester, the quant ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Egon Zehnder
Egon Zehnder is a global management consulting and executive search firm. Egon Zehnder is the world's largest privately held executive search firm and the third largest executive search and talent strategy firm globallywith an annual revenue of CHF 804 million. The firm offers services in Executive Search, Board Consulting and Leadership Strategy Services. History The firm was founded in 1964 by Egon P.S. Zehnder (1930–2021) (a 1956 Harvard Business School graduate) and would later grow to having 68 offices in 40 countries. In 1992, ''The Wall Street Journal'' reported that Dr. Zehnder, who at the time was 62, had transitioned out of running the firm and that A. Daniel Meiland, who had been the firm's regional director for North America, would be named chairman of the executive committee and chief executive officer of the company. In 2000, ''The Wall Street Journal'' reported that Egon Zehnder International (as the company was called at the time) was the largest executive sear ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Zehnder Confair
Zehnder Harry "Dick" Confair (January 11, 1906 – January 26, 1982) was an American politician from Pennsylvania who served as a Republican member of the Pennsylvania State Senate for the 24th district from 1959 to 1968 and the 23rd district from 1969 to 1972. Early life and education Confair was born on January 11, 1906, to Charles H. and Rena (Baum) Confair. He graduated from Berwick High School and received a B.S. degree from the Wharton School of the University of Pennsylvania. Career He was the founder of the Confair Bottling Company and worked as president of the First Federal Savings and Loan Association. He was a member of the board of directors for Williamsport chamber of commerce and the Northern Central Bank and Trust. Death and legacy Confair died on January 26, 1982, in Williamsport, Pennsylvania, and was interred at Twin Hills Memorial Park in Muncy, Pennsylvania. Interstate 80 in Pennsylvania is named the Z.H. Confair Memorial Highway in his honor, as is t ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
