However, shortly after this positive result, Kurt Gödel published On Formally Undecidable Propositions of Principia Mathematica and Related Systems ( 1931 ), showing that in any sufficiently strong axiomatic system there are true statements which cannot be proved in the system.

The Home Office removed gunpowder from its list of Permitted Explosives ; and shortly afterwards, on 31 December 1931, the former Curtis & Harvey's Glynneath gunpowder factory at Pontneddfechan, in Wales, closed down, and it was demolished by fire in 1932.

In an article written shortly before his death, Bradbury said the " John Carter of Mars " books and Harold Foster's 1931 series of Tarzan Sunday comics had such an impact on his life that " The Martian Chronicles would never have happened " otherwise.

A year after publishing a collection of brief lives, Portraits in Miniature ( 1931 ), Lytton Strachey died ; shortly afterwards Carrington shot herself.

He left Vickers shortly afterwards and in 1931 founded the aircraft construction company Airspeed Ltd.

From 1915, Nielsen taught at the Royal Conservatory where he became director in 1931, shortly before his death.

Angels One Five ( 1952 ) and Reach for the Sky ( 1956 ), the latter about Douglas Bader who was posted to RAF Kenley in 1930 No. 23 Squadron RAF shortly before his accident in 1931.

Anderson split with Haskett, who then died shortly after a car accident and a stroke in 1931.

A widely shown photo displays the two women shortly after the arrests in 1931.

Major General Elliott died at his home in Washington, D. C., shortly after noon 4 November 1931 after a brief illness.

Construction on the bridge piers began in 1929, with construction of the bridge following shortly afterwards in 1931, with its dedication held on February 22, 1932, George Washington's 200th birthday.

By 1931, shortly before The Holocaust, 92 % of the World's Jewish population was Ashkenazi in origin.

Jenkins was called to Hollywood by Darryl F. Zanuck and signed first to Paramount Pictures and shortly afterward to Warner Bros. His first role in films came in 1931, when he appeared as an ex-convict in the short Straight and Narrow.

Thus the rapid decline of the desert rat-kangaroo shortly after its recovery in 1931 correlates with the invasion of its habitat by the red fox.

Franco Cesana was an Italian Jew born on September 20, 1931 in the northern city of Mantova, shortly before Benito Mussolini came to power.

The opening ceremony took place in November 1931, shortly before the 1932 commemorations of Goethe's death one hundred years before.

It owes its name to Commercial Director of the Compagnie des Mines de Lens who was anxious to promote the development of sports clubs in the city and decided the construction in 1931, though he died shortly before the stadium's inauguration.

These groups had been officially accepted by NSDAP only after the foundation of the Auslands-Organisation: On August 7, 1931 Local Group Buenos Aires, shortly afterwards National Committee Paraguay ( August 20, 1931 ) and Local Group Rio de Janeiro ( October 5, 1931 ).

The population had increased again to 57 by 1931, shortly before the Parish was merged.

Two Portland-class cruisers were laid down in 1930 ; original plans called for a class of six, but four were later altered into New Orleans-class cruisers shortly after being laid down in 1930 & 1931.

He was elected to the National Academy of Design as an Associate in the oil class in 1931 ( after receiving his first Ranger Fund Purchase Prize at the Academy in 1930 ), and elevated to Academicianship in 1940.

According to a research report by the Centers for Disease Control and Prevention, Oran was decimated by the plague in 1556 and 1678, but outbreaks after European colonization, in 1921 ( 185 cases ), 1931 ( 76 cases ), and 1944 ( 95 cases ), were very far from the scale of the epidemic described in the novel.

Yet there were a few recruits, such as Clement Davies, who had deserted to the National Liberals in 1931 but now returned to the party during the World War II and who would lead it after the war.

In 1931, the castle gardens were first opened to the public, and are now open daily between April and the end of July, after which the Queen arrives for her annual stay.

It was formed in 1946, making it the second oldest formal flying aerobatic team ( flying under the same name ) in the world, after the French Patrouille de France formed in 1931.

The honour had already been proposed in 1931 and 1956, but was vetoed after a Foreign Office report raised concerns over Chaplin's political views and private life ; it was felt that honouring him would damage both the reputation of the British honours system and relations with the United States.

The six-year period after 1931 — when the cane toad was most prolific, and the white-grub saw dramatic decline — saw the highest-ever rainfall for Puerto Rico.

The asteroid 1604 Tombaugh, discovered in 1931, is named after him.

Part V of this act established an amending formula for the Canadian constitution, the lack of which ( due to more than 50 years of disagreement between the federal and provincial governments ) was the only reason Canada's constitutional amendments still required approval by the British parliament after ratification of the Statute of Westminster in 1931.

Bonset, which was only revealed after his death in 1931.

There were also enormous war reparations to be paid over a period of 70 years, although they ended in 1931 ( but were resumed after World War II ).

This Wöhler Myth, as historian of science Peter J. Ramberg called it, originated from a popular history of chemistry published in 1931, which, " ignoring all pretense of historical accuracy, turned Wöhler into a crusader who made attempt after attempt to synthesize a natural product that would refute vitalism and lift the veil of ignorance, until ' one afternoon the miracle happened '".

In 1931, after Woman in the Moon, Lang directed what many film scholars consider to be his masterpiece: M, a disturbing story of a child murderer ( Peter Lorre in his first starring role ) who is hunted down and brought to rough justice by Berlin's criminal underworld.

This title was abolished in 1931, after having been awarded to Boris Verlinsky, who won the 1929 Soviet Championship.

The film was completed in September 1931, but the censorship of the Hays Code prevented it from being released as Hawks and Hughes had originally intended, and the two men fought the Hays Office ( and made compromises ) for over a year until the film was released in 1932, after such other pivotal early gangster films as The Public Enemy and Little Caesar.

The prospect for tranquility was further advanced in 1931 when Ferrera and his insurgents were killed, while leading one last unsuccessful effort to overthrow the government, after government troops discovered their hiding place in Chamelecon.

While emigration began to tail off in England and Wales after the First World War, it continued apace in Scotland, with 400, 000 Scots, ten per cent of the population, estimated to have left the country between 1921 and 1931.

" His diaries reveal a long succession of affairs, before and after his marriage before a Protestant pastor in 1931 to Magda Quandt, with whom he had six children.

Gödel is best known for his two incompleteness theorems, published in 1931 when he was 25 years old, one year after finishing his doctorate at the University of Vienna.

Deportations on a smaller scale continued after 1931.

After further experiments, Fleming was convinced penicillin could not last long enough in the human body to kill pathogenic bacteria, and stopped studying it after 1931.

At first he translated from English ( from Fitzgerald's " translations ") ( 1922 ), after that from original language ( 1931 ).

An early implementation of the Radioteletype was the Watsongraph, named after Detroit inventor Glenn Watson in March 1931.

Roman law as preserved in the codes of Justinian and in the Basilica remained the basis of legal practice in Greece and in the courts of the Eastern Orthodox Church even after the fall of the Byzantine Empire and the conquest by the Turks, and also formed the basis for much of the Fetha Negest, which remained in force in Ethiopia until 1931.