It was introduced in 1971 by Stephen Cook in his seminal paper " The complexity of theorem proving procedures " and is considered by many to be the most important open problem in the field.

This and other data led Stephen Jay Gould and Niles Eldredge to publish the seminal paper on punctuated equilibrium in 1971.

Franconia Paper took over in 1950, producing 150 tons of paper a day until bankruptcy in 1971, at which time new river classification standards discouraged further papermaking in Lincoln.

In a 1971 paper in the journal Science, Dr. Raymond Damadian, an Armenian-American physician, scientist, and professor at the Downstate Medical Center State University of New York ( SUNY ), reported that tumors and normal tissue can be distinguished in vivo by nuclear magnetic resonance (" NMR ").

The Eldredge and Gould paper was presented at the Annual Meeting of the Geological Society of America in 1971.

Gould recalls that " Eldredge's 1971 publication Paleozoic trilobite s had presented the only new and interesting ideas on the paleontological implications of the subject — so I asked Schopf if we could present the paper jointly.

However, as already mentioned in the original paper of Franz Wegner, a solid state theorist who introduced 1971 simple gauge invariant lattice models, the high-temperature behaviour of the original model, e. g. the strong decay of correlations at large distances, corresponds to the low-temperature behaviour of the ( usually ordered!

In 1971, Schneider was second author on a Science paper with S. I. Rasool titled " Atmospheric Carbon Dioxide and Aerosols: Effects of Large Increases on Global Climate " ( Science 173, 138 – 141 ).

A few years later, in his seminal 1971 paper " The Complexity of Theorem Proving Procedures ", Cook formalized the notions of polynomial-time reduction ( a. k. a. Cook reduction ) and NP-completeness, and proved the existence of an NP-complete problem by showing that the Boolean satisfiability problem ( usually known as SAT ) is NP-complete.

His seminal paper, The Complexity of Theorem Proving Procedures, presented at the 1971 ACM SIGACT Symposium on the Theory of Computing, laid the foundations for the theory of NP-Completeness.

From 1971 on several mathematicians have been working on Wall's conjecture, posed by Wall in a 1971 paper, which said that all finitely generated groups were accessible.

Historically, the General Services Administration ( GSA ) set paper shredder guidance in the Interim Federal Specification FF-S-001169 dated July 1971 which was superseded by standard A-A-2599 for classified material which was canceled in February 2000.

The most far-fetched explanation of Charles ’ death comes from a folklorist Barbro Klein, who put together a thoroughly researched paper on his hypothesis in 1971.

In a white paper published in 1971 one of these counties " Area 26 " or " Bristol County ", was based on the commission's Bristol and Bath area, but lacked the areas of Wiltshire.

The paper fibers removed became part of a paper used for roofing materials .< ref >< cite > The Franklin Chronicle, August 1971 </ ref >

Since 1971, the company has been part of Appleton Papers Inc., producing carbonless paper.

A hatchback became available on February 20, 1971, debuting at the Chicago Auto Show ( also, in 1971, the Pinto brochure came with a paper cutout Pinto that one could fold together to make a 3D model ).

Their first jointly-authored paper, " Belief in the Law of Small Numbers ," was published in 1971 ( Tversky & Kahneman, 1971 ).

The fourth passive element, the memristor, is proposed by Leon Chua in a 1971 paper, but a physical component demonstrating memristance was not created until thirty-seven years later.

A United States Note, also known as a Legal Tender Note, is a type of paper money that was issued from 1862 to 1971 in the U. S. Having been current for over 100 years, they were issued for longer than any other form of U. S. paper money.

He bemoaned the fact that the book had been taken as the source material for a 1971 film that was perceived to glorify sex and violence.

His later novels included fixups such as The Beast ( aka Moonbeast ) ( 1963 ), Rogue Ship ( 1965 ), Quest for the Future ( 1970 ) and Supermind ( 1977 ); expanded short stories ( The Darkness on Diamondia ( 1972 ), Future Glitter ( aka Tyranopolis ) ( 1973 ); original novels such as Children of Tomorrow ( 1970 ), The Battle of Forever ( 1971 ) and The Anarchistic Colossus ( 1977 ); plus sequels to his classic works, many of which were promised, but only one of which appeared, Null-A Three ( 1984 ; originally published in French ).

He won the 1971 Alekhine Memorial in Moscow ( equal with Leonid Stein ), ahead of a star-studded field, for his first significant adult victory.

His Elo rating shot from 2540 in 1971 to 2660 in 1973, when he shared second in the USSR Chess Championship, and finished equal first with Viktor Korchnoi in the Leningrad Interzonal Tournament, with the latter success qualifying him for the 1974 Candidates Matches, which would determine the challenger of the reigning world champion, Bobby Fischer.

The Russian A-35 anti-ballistic missile system for defense of Moscow was established in 1971, has been improved since, and is still active.

In July 1971, the Apollo 16 astronauts visited Greater Sudbury, Ontario, Canada for geology training exercises, the first time U. S. astronauts ever did so.

* 1971 – Charles Manson is sentenced to death for conspiracy to commit the Tate / LaBianca murders.

-short for " The Collective Consciousness Society "-which had several hit singles produced by Mickie Most, including a version of Led Zeppelin's " Whole Lotta Love ", which was used as the theme for BBC's Top Of The Pops between 1971 and 1981.

* 1971 – The Society for American Baseball Research is founded in Cooperstown, New York.

A Nobel Prize was awarded to Earl Sutherland in 1971 for discovering the key role of AC-III in human liver, where adrenaline indirectly stimulates AC to mobilize stored energy in the " fight or flight " response.

Agent Orange is the combination of the code names for Herbicide Orange ( HO ) and Agent LNX, one of the herbicides and defoliants used by the U. S. military as part of its herbicidal warfare program, Operation Ranch Hand, during the Vietnam War from 1961 to 1971.

By 1971, 12 percent of the total area of South Vietnam had been sprayed with defoliating chemicals, at an average concentration of 13 times the recommended USDA application rate for domestic use.

By 1971, 12 percent of the total area of South Vietnam had been sprayed with defoliating chemicals, at an average concentration of 13 times the recommended USDA application rate for domestic use.

* 1971 – Ping Pong Diplomacy: In an attempt to thaw relations with the United States, the People's Republic of China hosts the U. S. table tennis team for a weeklong visit.

* Moviline ( Telefónica Servicios Uno since 1971, Moviline since 1994 ) was the analogue service provider for the Spanish operator.

The new songs included in this production had been added during a 1971 Los Angeles production: " Echo Song " ( sung by Hero and Philia ), and " Farewell " ( added for Nancy Walker playing the role of Domina as she and Senex depart for the country ).

In 1971, a Four-Power agreement guaranteed access to and from West Berlin by car or train through East Germany and ended the potential for harassment or closure of the routes.

The Beverly Hillbillies is an American situation comedy originally broadcast for nine seasons on CBS from 1962 to 1971, starring Buddy Ebsen, Irene Ryan, Donna Douglas, and Max Baer, Jr.

Although he would go on to have back-to-back 17-win seasons for the Chicago Cubs in 1971 and 1972, including a no-hitter in the latter season, this did not help the Reds, who ended up losing the 1970 World Series to Robinson and the Orioles.

Johnson would be dealt along with Johnny Oates to the Atlanta Braves for catcher and 1971 National League Rookie of the Year Earl Williams.

* Derek Benz ( b. 1971 ), American author of fantasy fiction for children

In 1971 the year of eligibility was changed to the same as the year of the award ; in effect, this meant that books published in 1970 were not considered for the Booker in either year.

Starting in 1971 Ritchie made changes to the language while converting its compiler to produce machine code, most notably adding data typing for variables.