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on september 24, the commemoration of liu hui's 1800th birthday was grandly launched at the unesco headquarters in paris, france. he junke, secretary of the party leadership group of the china association for science and technology, vice chairman in charge of daily work, and first secretary of the secretariat, lydia arthur brito, assistant director-general for natural sciences of unesco, yang xinyu, ambassador of china to unesco, park sangmi, permanent representative of south korea to unesco, and elman abdullayev, permanent representative of azerbaijan to unesco, attended the event and delivered speeches. representatives of unesco member states, internationally renowned experts in the history of mathematics from china, the united states, france, germany, south korea and other countries, and chinese and foreign scholars attended the event. the event was co-organized by the china association for science and technology and the china national commission for unesco, hosted by the science and technology communication center of the china association for science and technology, and hosted by ruan cao, director of the science and technology communication center of the china association for science and technology.

he junke said in his speech that mathematics is one of the most developed basic scientific disciplines in ancient china, and it is also an extremely important mainstream development of ancient mathematics in the world. liu hui, a mathematician in the wei and jin dynasties, as the main founder of chinese classical mathematical theory, occupies an important position in the history of world mathematics. his books "nine chapters on the mathematical art" and "sea island mathematical classic" have influenced a large number of mathematicians and mathematical works in later generations. every nation has its splendid culture and scientific and technological treasures. human civilization has developed and progressed to today through exchanges and mutual learning. it is hoped that by holding this event, the scientific spirit of ancient sages will be widely promoted, scientific and technological cultural exchanges will be carried out, exchanges and mutual learning among different civilizations in the world will be enhanced, and joint efforts will be made to build a community with a shared future for mankind and create a better future for mankind.

in her speech, lydia arthur brito said that liu hui was a great mathematician, whose contributions have left a deep mark on human knowledge, and whose innovative spirit still resonates today. his genius achievements in geometry, logic and digital systems have shaped the development trajectory of mathematics and continue to inspire scholars around the world. this commemoration is not only a tribute to his scientific legacy, but also a reminder of the important value of mathematical science in shaping the future.

in november 2023, the 42nd unesco general conference reviewed and approved the series of commemorative activities for the anniversary of liu hui's birth recommended by the china association for science and technology. this event is the first commemorative event on the birthday of a scientist held at the unesco headquarters in china, aiming to show the world the great scientific achievements, outstanding scientific thoughts and outstanding contributions to human civilization of ancient chinese sages represented by liu hui. at the same time, many activities such as the jiuzhang liuhui-liu hui special exhibition on liu hui, the founder of chinese classical mathematical theory, and the international symposium on liu hui's academic thought were held in paris, france.