With the Prior Analytics, Aristotle is credited with the earliest study of formal logic, and his conception of it was the dominant form of Western logic until 19th century advances in mathematical logic.

Prior to the emergence of quantum mechanics as a separate theory, the mathematics used in physics consisted mainly of formal mathematical analysis, beginning with calculus ; and, increasing in complexity up to differential geometry and partial differential equations.

Prior to its formal accession to the United Nations, Switzerland had maintained an observer role at the UN's General Assembly and its Economic and Social Council.

* The Prior Analytics, a formal analysis of valid argument or " syllogism ".

The Prior Analytics contains his exposition of the " syllogistic ", where three important principles are applied for the first time in history: the use of variables, a purely formal treatment, and the use of an axiomatic system.

Prior to the development of the formal Juno award ceremonies, RPM Magazine began polling its readers in 1964 to determine which artists and groups were considered the best in Canada.

Prior to its formal founding, the area was the site of several American Revolutionary War battles: Williams ' Plantation, Dec. 31, 1780 ; Mud Lick, March 2, 1781 ; and Bush River, May 1781.

Prior to 1845 and the founding of the Natchez Institute, the city's elite were the few who could pay for formal education.

Prior to the implementation of the " law school system " in 2004, the legal education system was driven more by examinations than by formal schooling.

Prior to the 1980s, most Latin American countries focused on social insurance policies involving formal sector workers, assuming that the informal sector would disappear with economic development.

Prior to the 1880s and the Presidency of Grover Cleveland, the relationship between the President, his administration and the small but growing number of newspapers covering him was such that there was little need for a formal plan or designated spokesperson to manage it.

Prior to promotion to lieutenant, a commissioned officer candidate in the Royal Navy had to pass a formal examination.

Two of these texts in particular, namely the Prior Analytics and De Interpretatione contain the heart of Aristotle's treatment of judgements and formal inference, and it is principally this part of Aristotle's works that is about term logic.

Prior to the formal announcement, store employees saw weekly shipments shrink and delivery schedules went from 3 days per week to one.

Prior to the formal closure in 2009, FEER died many deaths — in 1992 when Bowring was forced to resign as editor ; in 2001 when it was merged with the Asian Wall Street Journal ; in 2004 when it ceased as a weekly and was published as a monthly after being downsized to a staff of two.

Prior to 1974, Congress had no formal process for establishing a coherent budget.

Prior to 1928, it bore the name of Kamienna ; in less formal contexts usually only the first part of the name ( Skarżysko ) is used.

The Prior Analytics represents the first formal study of logic which is the study of arguments ; argument being in logic a series of true or false statements which lead to a true or false conclusion.

Prior to World War II, it was called, or Emperor's Birthday, but after the war the new government renamed it Tennō tanjōbi, less formal language with the same meaning, in 1948, when it was established as a holiday by law.

Prior to the enactment of the Hague Service Convention, service of process in civil cases was generally effected by a letter rogatory, a formal request from the court in the country where proceedings were initiated or underway to a court in another country where the defendant resided.

Prior to a formal hearing to terminate a member's occupancy some co-operatives issue a " Notice of Concern " to request the member to attend a Board of Directors meeting to attempt to resolve an issue of arrears or other behaviour contravening the co-operative's Occupancy By-law.

Prior to the formal foundation of the ASI, Harding was also involved in the production of a series of animated cartoons extolling the virtues of free-market capitalism.

Prior to 1953, there was no formal infantry training in the Marine Corps, and all Marines received combat training at recruit training.

Prior to its independence, on September 7, 1822, Brazil had no formal Constitution, since Portugal only adopted its first Constitution on September 23, 1822, 16 days after Brazilian self-proclaimed emancipation.

Prior to the increased industrialization and modernization following the establishment of the People's Republic of China in 1949, the consumption of meat or animal products was " strikingly low.

Prior to independence, the French establishment and Catholic Church feared Opangault's radicalism and favored the rise of Fulbert Youlou, a former priest.

Prior to the establishment of the UPU, each country had to prepare a separate postal treaty with other nations it wished to carry international mail to or from.

Prior to the establishment of UNHCR, Fridtjof Nansen was the League of Nations High Commissioner of the Nansen International Office for Refugees, from 1922.

Prior to the establishment of Glasnevin Cemetery, Irish Catholics had no cemeteries of their own in which to bury their dead and, as the repressive Penal Laws of the eighteenth century placed heavy restrictions on the public performance of Catholic services, it had become normal practice for Catholics to conduct a limited version of their own funeral services in Protestant cemeteries.

Prior to this, he had defaulted to the dominant view of the Parisian music establishment, as typified by Le Sueur: that the symphony was a lesser form of composition that Mozart and Haydn had already taken as far as possible.

Prior to the establishment of the EPA, the federal government was not structured to comprehensively regulate environmental pollutants.

Prior to the establishment of the missions, the native peoples knew only how to utilize bone, seashells, stone, and wood for building, tool making, weapons, and so forth.

Prior to the establishment of the missions, the native peoples knew only how to utilize bone, seashells, bush, and wood for building, tool making, weapons, and so forth.

Prior to the Academy's establishment, air power advocates had been pushing for a separate air force academy for decades.

Prior to the establishment of ICANN for this purpose, IANA was administered primarily by Jon Postel at the Information Sciences Institute ( ISI ) of the University of Southern California ( USC ), under a contract USC / ISI had with the United States Department of Defense, until ICANN was created to assume the responsibility under a United States Department of Commerce contract.

Prior to the establishment of universities, European higher education took place for hundreds of years in Christian cathedral schools or monastic schools ( Scholae monasticae ), in which monks and nuns taught classes ; evidence of these immediate forerunners of the later university at many places dates back to the 6th century AD.

Prior to the establishment of The Office, Virgin Atlantic had its head office in Ashdown House on the High Street in Crawley.

Prior to the establishment of Penn's Philadelphia, New Castle was center of government.

Prior to the settlers ' establishment, the area was occupied by Native Americans as a hunting area and a burial ground.

Prior to the establishment of a series of dams, the river dropped in, from Dalton to Bath.

Prior to the establishment of Haddon Township High School in the 1960s, most Haddon Township students attended Collingswood High School ; however, some attended Haddonfield Memorial High School or Audubon High School.

Prior to the village's establishment on July 7, 1982, the area was an unincorporated section of the town of Rye.

Prior to establishment of its post office with the name “ Rattan ”, the area was called Sulphur Springs, Indian Territory.

Prior to the establishment of Northampton County in 1752, the area was part of Bucks County and the land currently occupied by South Whitehall was known as " the back part of Macungie " on the " Heidelberg District.

Prior to the establishment of the Second Law, many people who were interested in inventing a perpetual motion machine had tried to circumvent the restrictions of First Law of Thermodynamics by extracting the massive internal energy of the environment as the power of the machine.

Prior to the establishment of this mail route, the families received mail from Sipe Springs.

Prior to the establishment of the village of Harrisburg a post office named Big Darby Post Office had been established on March 13, 1834, and the name was changed to Harrisburgh Post Office on February 18, 1835.

Prior to the establishment of the York Racecourse on the Knavesmire, Acomb Moor was used for staging horse racing.

Prior to the establishment of official rules by the Afghan Olympic Federation the sport was mainly conducted based upon rules such as not whipping a fellow rider intentionally or deliberately knocking him off his horse.