Denomination: 3 000 Ft

Edge: BU

Date of issue: 2023.03.24.

Material: Cu75Ni25

Issue limit: 4000 pcs

Diameter: 30 mm

Weight: 12.5 g

Designer: Zoltán Kovács

Pál Erdős, one of the greatest mathematicians of the 20th century, was born on 26 March 1913 in Budapest. A child prodigy, at the age of 4 he could already do multiplication with triple-digit numbers and independently discovered negative numbers. He fi rst appeared publicly on the mathematics scene at a national competition for secondary school students. He continued his studies at Pázmány Péter Catholic University and the Budapest University of Technology, attending lectures by both of these institution’s professors (Lipót Fejér, József Kürschák, Dénes Kőnig). Due to rising anti-Semitism, he emigrated in 1934, fi rst taking a post- doctoral position in Manchester,England, for 4 years before joining the world-famous US Princeton Institute for Advanced Study in 1938. Starting from 1940 he had no permanent residence and spent his last 50-60 years travelling. He felt as at home in England as he did in the United States or in his home country in Budapest. He was a member of eight scientifi c academies on four continents and held honorary degrees from around 15 universities. He lectured at hundreds of universities, inspiring he work of thousands of mathematicians. The superior quality of his research s evidenced his more than 1,400 publications and 24,500 citations, along with more than 500 co-authors, making him the world record holder among mathematicians. Erdős gained world renown at a young age with his surprisingly simple and elegant proof of Chebyshev’s theorem (that for all n≥3 there is a prime number between n and 2n). He is one of the most recognised fi gures domestically and internationally for his research and application of the fi eld of combinatorics. In 1983, at the age of 70 he was awarded the Wolf Prize in mathematics for his many achievements in the fi elds of number theory, combinatorics, probabilistic number theory, set theory and analysis, as well as his personal infl uence on the world’s mathematicians.

Front: The front of the coin features elements related to the mathematician’s work: the central motif is Chebyshev’s theorem “n < p < 2n”, which Erdős solved with simplicity and elegance, with a prime spiral depicted in the background. The compulsory design elements: the inscription ‘MAGYARORSZÁG’, the value numerals ‘3000’, the mint mark ‘BP’ and the mint year ‘2023’ are also on the obverse.

Back: The back of the coin bears a half-profi le portrait of the world-famous mathematician. To the right of the image is the legend “WOLF-DÍJ • 1983” (Wolf Prize • 1983), which is common to all of the pieces in this series and denotes the year that Erdős won the prize. His name is written below this, with the years of his birth and death, “1913-1996”. The master mark of coin’s designer, sculptor Zoltán Kovács, is located to the right of the portrait.

Shipping: The item will be shipped within 3 working days after payment received by A class priority mail with recorded delivery. Delivery time to Europe is about 10-21 days, to the United States and the rest of the countries are about 30-45 days

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Uncirculated coins: The term "uncirculated coin" refers to the condition of a coin that indicates that it has never circulated in the regular money supply in the economy. In other words, the coin shows no signs of wear on any of its surfaces. Since most modern coins are mass-produced in large quantities, it is common that the coin may have small nicks and scrapes on its surface from the production process and transported in bags and bins. These minor imperfections are not from the coin circulating in commerce, and hence the coin is still considered an uncirculated coin.

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