Gauss also made important contributions to number theory with his 1801 book Disquisitiones Arithmeticae ( Latin, Arithmetical Investigations ), which, among things, introduced the symbol ≡ for congruence and used it in a clean presentation of modular arithmetic, contained the first two proofs of the law of quadratic reciprocity, developed the theories of binary and ternary quadratic forms, stated the class number problem for them, and showed that a regular heptadecagon ( 17-sided polygon ) can be constructed with straightedge and compass.

As a consequence, these languages fail to be Turing complete and expressing certain functions in them is impossible, but they can still express a wide class of interesting computations while avoiding the problems introduced by unrestricted recursion.

More than one century after Euler's paper on the bridges of Königsberg and while Listing introduced topology, Cayley was led by the study of particular analytical forms arising from differential calculus to study a particular class of graphs, the trees.

A new series feature introduced in Hexen is the choice of character class.

* the Turya class torpedo boat, which was introduced in 1972 and still remains in service today

* the Matka class missile boat, which was introduced in the 1980s and still remains in service today

* the Muravey class patrol boat, which was introduced in the 1980s and still remains in service today

The IBM 3270 is a class of block oriented terminals made by IBM originally introduced in 1972 ( known as " display devices ") normally used to communicate with IBM mainframes.

A puppetry class offered in the applied arts department introduced him to the craft and textiles courses in the College of Home Economics, and he graduated in 1960 with a B. S.

John increased the professionalism of local sergeants and bailiffs, and extended the system of coroners first introduced by Hubert Walter in 1194, creating a new class of borough coroners.

Kaiser class battleship: introduced superfiring rear turret, offset side turrets and turbine propulsion.

The Kaiser class battleships built between 1909 and 1913 introduced a change in design as turbine engines were finally approved.

Electric locomotives, because they tend to be less technically complex than diesel-electric locomotives, are both easier and cheaper to maintain and have extremely long working lives, usually 40 to 50 years: the last unit of the Italian E626 class, introduced in 1928, was retired 71 years later, in 1999.

In 1933, Bengt Strömgren introduced the term Hertzsprung-Russell diagram to denote a luminosity-spectral class diagram.

also introduced in May 2007 the attribute value: < code >< nowiki > class =" robots-nocontent "</ nowiki ></ code >.

In Renaissance Europe, the arrival of mechanical movable type printing introduced the era of mass communication which permanently altered the structure of society: The relatively unrestricted circulation of information and ( revolutionary ) ideas transcended borders, captured the masses in the Reformation and threatened the power of political and religious authorities ; the sharp increase in literacy broke the monopoly of the literate elite on education and learning and bolstered the emerging middle class.

Phrenology's success was also due in part because it was introduced at a time when scientific lectures were becoming a form of middle class entertainment, exposing a large demographic of people to phrenological ideas who wouldn't have been exposed otherwise.

In addition to the old and formal ius civile a new juridical class is created: the ius honorarium, which can be defined as " The law introduced by the magistrates who had the right to promulgate edicts in order to support, supplement or correct the existing law.

Some online classes provide experience in a class so that when you take it you have already been introduced to the subject and know what to expect, and even more classes provide High School / College credit allowing you to take the class at your own pace.

Weber introduced three independent factors that form his theory of stratification hierarchy ; class, status, and power:

In 1966 C. A. R. Hoare introduced the concept of record class construct, which Dahl and Nygaard extended with the concept of prefixing and other features to meet their requirements for a generalized process concept.

The latter form was introduced to avoid confusion because a type parameter does not need to be a class, it may also be a basic type like int or double.

Windows 2000 also introduced USB device class drivers for USB printers, Mass storage class devices, and improved FireWire SBP-2 support for printers and scanners, along with a Safe removal applet for storage devices.

In Britain, also previous to this EU jurisprudence, a series of laws introduced during the 1980s by Margaret Thatcher's government restricted closed and union shops.

In 1897, a bill was introduced in the Michigan legislature asking for a ten-year closed season on Passenger Pigeons.

In the United States, the nonpartisan blanket primary, introduced in Louisiana for partisan state elections in 1975 and federal elections in 1978 ( with a short return to a closed primary system in 2010 ), is virtually identical to the two-round system.

The Committee ’ s laws and policies took the revolution to unprecedented heights — they introduced the revolutionary calendar in 1793, closed churches in and around Paris as a part of a movement of dechristianization, tried and executed Marie Antoinette, and instituted the Law of Suspects, among others.

In 1923 coil ignition and electric starting were added and the four-seater " Long Four " was introduced in tourer form priced from £ 245 followed in 1925 by a closed saloon model, the previous short-chassis two-seater continuing in production.

In 2008, Cedar Point introduced Planet Snoopy, a kids ' area constructed on the site of Peanuts Playground ; it consists of family and children's rides relocated from Cedar Point's sister park Geauga Lake after it closed.

Many parts were introduced since the Liverpool factory closed under the French-and-Japanese running of the company.

In addition, a second pair of codepoints specifically for the original closed epigraphical shape x16px ( U + 03D8 / U + 03D9 " Greek Letter Archaic Koppa " and " Greek Small Letter Archaic Koppa ", ) was introduced in version 3. 2 ( 2002 ).

In the mid 1960s, Disneyland introduced hovercraft-based bumper cars called " The Flying Saucers ", which worked on the same principle as an air hockey game ; however the ride was a mechanical failure and closed after a few years.

By the time the legislation allowing this was introduced into the 1968 Transport Act ( Section 39 of this Act made provision for a subsidy to be paid by the Treasury for a three-year period ) many of the services and railway lines that would have qualified and benefited from these subsidies had already been closed or removed, thus lessening the impact of the legislation.

In 1905, the government introduced the law on the separation of Church and State, heavily supported by Emile Combes, who had been strictly enforcing the 1901 voluntary association law and the 1904 law on religious congregations ' freedom of teaching ( more than 2, 500 private teaching establishments were by then closed by the State, causing bitter opposition from the Catholic and conservative population ).

: " It was Comus, who, in 1857, saved and transformed the dying flame of the old Creole Carnival with his enchanter's cup ; it was Comus who introduced torch lit processions and thematic floats to Mardi Gras ; and it was Comus who ritually closed, and still closes, the most cherished festivities of New Orleans with splendor and pomp.

Subaru refers to these as boxer engines in publicity commentary, and include a variety of naturally aspirated and turbo driven engines from 1966, when the Subaru 1000 was introduced to current ; both closed and semi-closed short blocks have been used.

The most dramatic change in the topology from the classical picture to the new is that points are no longer necessarily closed ; by expanding the definition, Grothendieck introduced generic points whose closures are strictly larger than themselves.

A new C3 variant was introduced in July 2003, the C3 Pluriel, which can be configured as a full or partial convertible or a closed car, due to its detachable roof bars and folding fabric roof.

On 1 October five Arab leaders were arrested and deported to the Seychelles, the Arab Higher Committee was outlawed, all frontiers with Palestine were closed, telephone connections to neighbouring countries were withdrawn, press censorship was introduced and a special concentration camp was opened near Acre.

Seely introduced the notion of a locally cartesian closed category ( LCCC ) as the basic model of Type Theory.

When the plant closed in 1997, Ford dropped the Laser and introduced the Ford Escort hatchback and sedan, having already introduced the Escort wagon.

Kaikoura Station was the last station in New Zealand to have a refreshment room for passengers, which closed in 1988 when the Coastal Pacific Express ( former name for the TranzCoastal ) introduced on-board refreshments.

When it was introduced in 1948 the Elliott saloon was claimed to be the fastest production closed car in the world, it was timed at 104. 7 mph over a mile.

As nearly as possible a closed cycle was maintained so that a minimum of unknown factors should be introduced into the food chain to confuse the issue.

His next position was as Governor of Gibraltar from 9 July 1918 – 26 May 1923, where he introduced an element of democracy and closed some brothels.

After Rank introduced two and then three screens to the Odeon the New Oxford closed on 25 October 1980.