Notable productions were Lulu ( 1962 ; conducted by Karl Böhm, staged by Otto Schenk, designed by Caspar Neher, starring Evelyn Lear ), Haydn's Orfeo ed Euridice ( 1967 ; conducted by Richard Bonynge, staged by Rudolf Hartmann, with Nicolai Gedda, Joan Sutherland ), Fidelio ( 1970 ; conducted by Leonard Bernstein, staged by Schenk, with Gwyneth Jones, James King ), Il ritorno d ' Ulisse in patria ( 1971 ; conducted by Nikolaus Harnoncourt, staged by Federik Mirdita ), L ' elisir d ' amore ( 1973 ; conducted by Silvio Varviso, staged by Schenk, with Nicolai Gedda, Reri Grist, Eberhard Wächter ), Die Fledermaus ( 1975 ; conducted by Mstislav Rostropovich, staged by Michael Kehlmann, with Wiesław Ochman, Reri Grist, Elizabeth Harwood, Waldemar Kmentt ), La clemenza di Tito ( 1976 ; conducted by Julius Rudel, staged by Mirdita, with Werner Hollweg, Teresa Berganza, Arleen Augér, Edda Moser ), Fierrabras ( 1988 ; conducted by Claudio Abbado, staged by Ruth Berghaus, with Thomas Hampson, Karita Mattila, László Polgár ), Die Entführung aus dem Serail ( 1989 ; conducted by Harnoncourt, staged by Ursel Herrmann, Karl-Ernst Herrmann ), Don Giovanni ( 1990 ; conducted by Abbado, staged by Luc Bondy, with Ruggero Raimondi, Karita Mattila, Marie McLaughlin, Cheryl Studer ), Le nozze di Figaro ( 1991 ; conducted by Abbado, staged by Jonathan Miller, with Ruggero Raimondi, Marie McLaughlin, Cheryl Studer ) and the world premiere of Adriana Hölszky's Die Wände ( 1995 ; conducted by Ulf Schirmer, staged by Hans Neuenfels ).

In 1970, Yuri Matiyasevich proved that this could not be done.

The exhaust is, however, relatively low in NOx emissions, as combustion temperatures are lower than in other engines, and also because of some inherent Exhaust Gas Recirculation-EGR-in early engines ; the higher the combustion temperature is, the higher the NOx emissions are ( sir Harry Ricardo proved in the 20's that for every 1 % increase of the proportion of exhaust gas in the admission mix, there's a 45º F reduction in flame temperature ); this allowed Mazda to meet the United States Clean Air Act of 1970 in 1973 with a simple and inexpensive ' thermal reactor ' ( an enlarged open chamber in the exhaust manifold ) by paradoxically enriching the air-fuel ratio to the point where the unburned hydrocarbons ( HC ) in the exhaust would support complete combustion in the thermal reactor ; while piston-engine cars required expensive catalytic converters to deal with both unburned hydrocarbons and NOx emissions.

The Shillelagh was a disappointment compared to the later BGM-71 TOW anti-tank guided missile first produced in 1970 by the U. S. The TOW system, which could not fire gun rounds, and was guided by a wire which directly sent commands to the missile, proved simpler and more versatile.

In fact, during the 1970 – 71 season, the name " Dallas " was dropped in favor of " Texas " and an attempt was made to make the team a regional one, playing games in Fort Worth, Texas, at the Tarrant County Coliseum, as well as Lubbock, Texas, at the Lubbock Municipal Coliseum, but this proved a failure and the team returned full-time to Dallas in time for the 1971 – 72 season, splitting their games at Moody Coliseum and Dallas Convention Center Arena.

Matthew Cook ( born February 7, 1970 ) is a mathematician and computer scientist who proved Stephen Wolfram's conjecture that the Rule 110 cellular automaton is Turing-complete.

In 1970, Yuri Matiyasevich proved ( using results of Julia Robinson ) Matiyasevich's theorem, which implies that Hilbert's tenth problem has no effective solution ; this problem asked whether there is an effective procedure to decide whether a Diophantine equation over the integers has a solution in the integers.

Cowdrey had snapped an Achilles tendon in the summer of 1969 and Illingworth was appointed in his stead, but proved so successful that he was retained even after Cowdrey recovered in 1970.

Continued success in the US proved elusive beyond 1967, although they had as many Top Ten hits in Britain ( five ) in the period 1967 through 1970 as they had had there in the years of the mid -' sixties when the band were wowing American audiences and British audiences seemed more diffident.

St. Nicholas ' tenure with the group proved to be brief and he was let go in 1970 after incurring Kay's wrath by showing up onstage in a bunny suit, and playing his bass loudly and out of tune.

Zia was stationed in Jordan from 1967 to 1970 as a Brigadier, helping in the training of Jordanian soldiers, as well as leading the training mission into battle during the Black September operations as commander of Jordanian 2nd Division, a strategy that proved crucial to King Hussein's remaining in power.

During the 1970 – 71 season, the team became the Texas Chaparrals and an attempt was made to make the team a regional one, playing games in Fort Worth, Texas, at the Tarrant County Coliseum, as well as Lubbock, Texas, at the Lubbock Municipal Coliseum, but this proved a failure and the team returned full-time to Dallas in time for the 1971 – 72 season, splitting their games at Moody Coliseum and Dallas Convention Center Arena.

Meanwhile for those racing teams using Fords in 1970, some kept their 1969 Torinos when the new curvaceous 1970 models proved to be slower on the NASCAR track due to its less aerodynamic design.

This result proved a conjecture formerly known as Wagner's conjecture, after Klaus Wagner ; Wagner had conjectured it long earlier, but only published it in 1970.

This proved near impossible to achieve and the majority was reduced to 55 % in 1970 and then to 50 % in 1984.

The Capri proved highly successful, with 400, 000 cars sold until 1970.

In 1969, she announced that she would limit her concert singing, and in 1970 she made her acting début in the stage play Madame that proved to be a commercial flop.

In computational complexity theory, Savitch's theorem, proved by Walter Savitch in 1970, states that for any function ƒ ( n ) ≥ log ( n ),

The EC-121Rs and their crews proved too vulnerable and were partly replaced in 1969 and 1970 by QU-22Bs ( modified Beech A-36 Bonanzas ) which were to be remotely piloted, and which had undergone primary mission equipment and PME flight tests at Eglin Air Force Base, Florida, in 1968.

He was an outstanding two-year-old in 1970, and proved even better at three, winning the Epsom Derby, the Eclipse Stakes, the King George VI and Queen Elizabeth Stakes and the Prix de l ' Arc de Triomphe.

This was followed by the live-action feature film Doppelgänger ( aka Journey To The Far Side of the Sun ) and was followed by its first, and only, live action TV series, UFO ( 1970 ), which proved to be its last production.

With so much power and torque, the GT-HO further proved the old " there is no substitute for cubic inches on the Mountain " saying by winning the 1970 H-F 500 as the small yet mighty Torana just could not compensate for the major power advantage that the Phase Two's had on the Bathurst straights.

The second event, the Mattel Hot Wheels Super Nationals Drag Race on November 20, 1970, drew a crowd second only to the NHRA Championships in Indianapolis, Indiana and the Ontario drag strip proved to be the fastest ever with many world records set.

The first nontrivial result for SL, however, was Savitch's theorem, proved in 1970, which provided an algorithm that solves USTCON in log < sup > 2 </ sup > n space.

`` As we look to the $800 billion economy that is predicted for 1970 and the increase of about 40% in consumer expenditures that will be required to reach that goal, management can well be restless about how this tremendous volume and number of new products will be created and marketed '', Peterson said.

Major to this effort is to get all world powers to withdraw to their own territories, say by 1970.

Andre Kirk Agassi (; born April 29, 1970 in Las Vegas, Nevada ) is a retired American professional tennis player and former World No. 1, who was one of the game's most dominant players from the early 1990s to the mid 2000s.

* 1970 – California judge Harold Haley is taken hostage in his courtroom and killed during in an effort to free George Jackson from police custody.

* 1970 – The first Earth Day is celebrated.

Signed at The Hague on 16 December 1970, the Convention for the Suppression of Unlawful Seizure of Aircraft contains 14 articles relating to what constitutes hijacking as well as guidelines for what is expected of governments when dealing with hijackings.

Ani DiFranco (; born Angela Maria DiFranco on September 23, 1970 ) is an American singer, guitarist, poet, and songwriter.

The field of classifying Apicomplexa is in flux and classification has changed throughout the years since it was formally named in 1970.

* 1970 – Apollo 13 is launched.

* 1970 – Paul McCartney announces that he is leaving The Beatles for personal and professional reasons.

* 1970 – The first Chinese satellite, Dong Fang Hong I, is launched.

The most comprehensive history is still Hubert Jedin's The History of the Council of Trent ( Geschichte des Konzils von Trient ) with about 2500 pages in four volumes: The History of the Council of Trent, The fight for a Council ( Vol I, 1951 ); The History of the Council of Trent The first Sessions in Trent ( 1545 – 1547 ) ( Vol II, 1957 ); The History of the Council of Trent Sessions in Bologna 1547 – 1548 and Trent 1551 – 1552 ( Vol III, 1970, 1998 ); The History of the Council of Trent Third Period and Conclusion ( Vol IV, 1976 ).

La Bataille des dix millions was made in 1970 with Mayoux as co-director and Santiago Álvarez as cameraman and is about the 1970 sugar crop in Cuba and its disastrous effects on the country.

Population censuses have been taken in Estonia in 1881, 1897, 1922, 1934, 1959, 1970, 1979, 1989 and 2000, and is being taken in January 2012.

On the NASDAQ the identifying fifth letter " Q " at the end of a stock symbol indicates the company is in bankruptcy ( formerly the " Q " was placed in front of the pre-existing stock symbol ; a celebrated example was Penn Central, whose symbol was originally " PC " and became " QPC " after the company filed Chapter 11 in 1970 ).

In what is considered a forerunner to disco style clubs, New York City DJ David Mancuso opened The Loft, a members-only private dance club set in his own home, in February 1970.

* 1970 – The first ever general election on the basis of direct adult franchise is held in Pakistan for 313 National Assembly seats.

* 1970 – October Crisis: In Montreal, Quebec, kidnapped British Trade Commissioner James Cross is released by the Front de libération du Québec terrorist group after being held hostage for 60 days.

Notable for using this data model is the ADABAS DBMS of Software AG, introduced in 1970.

Dartmouth serves as the host institution of the University Press of New England, a university press founded in 1970 that is supported by a consortium of schools that also includes Brandeis University, the University of New Hampshire, Northeastern University, Tufts University and the University of Vermont.

DMT is classified in the United States as a Schedule I drug under the Controlled Substances Act of 1970.

The population decreased to 1, 340, 194 in January 2011, which is even lower than the number of people that lived in Estonia in 1970.

* The border between the two countries is based on the Anglo-Ethiopian Agreement of 6 December 1907 ; however, a treaty signed by Ethiopia and Kenya on 9 June 1970 determines the present-day boundary, abrogating all previous boundary treaties.

David Carr of Yale University commented in 1970 on Husserl's following: " It is well known that Husserl was always disappointed at the tendency of his students to go their own way, to embark upon fundamental revisions of phenomenology rather than engage in the communal task " as originally intended by the radical new science.