Ri Song Il, PhD and researcher at the mathematics faculty of the University of Sciences, is one of the competent scientists produced by the university.
Born into an ordinary farmer’s family in Kumya County of South Hamgyong Province, Ri had a special interest in math when he was young.
“Song Il was good at studies, especially math. His performance was always excellent enough to amaze me. So I would tell him to be a ‘doctor in mathematics’ in the future,” said Yun Myong Chun, his teacher at the then Songje Primary School in the county.
He enrolled at the University of Sciences, an institution for training talents in the basic science field, and majored in mathematics. After completing his university and postgraduate courses, he has been engaged in education and scientific research at its math faculty since 2001.
In those years, he independently presented “A new fixed point theorem in the fractal space” and authored more than 20 scientific papers of great academic significance including “A new idea to construct fractal interpolation curve”. He was awarded the February 16 Science and Technology Prize in 2016, the top honour which is conferred on top scientists and technicians in the DPRK.
He accepted the request from a famous international mathematics journal to be its critic in April 2016 and commented on dozens of papers published at different SCI-level magazines in different countries. He also examined some papers at the solicitation of several prestigious international journals and offered his opinions to the related magazines.
In particular, he developed a theory on nonlinear fractal interpolation for the first time in the world.
The theorem he presented in his “A new fixed point theorem in the fractal space”, which was carried in a renowned journal published by the royal mathematics association of the Netherlands in 2016, has been dubbed “Ri’s contraction mappings” and “Ri’s fixed point theorem” in the papers foreign scientists published in journals since 2018.
His 18-year-old son is now studying at his university.
More From Pyongyang Times
Israel is committing appalling massacres of innocent people more undisguisedly in different parts of the Middle East under the
April 17, 2026
Israel is committing appalling massacres of innocent people more undisguisedly in different parts of the Middle East under the
A men's football match between Jangsubong and Wolmido teams took place at Kim Il Sung Stadium on April 15, the auspicious April
April 17, 2026
A men's football match between Jangsubong and Wolmido teams took place at Kim Il Sung Stadium on April 15, the auspicious April
The semi-final between the DPRK and ROK teams for the 2026 AFC U-20 Women's Asian Cup took place in Thailand on April 15 (local
April 17, 2026
The semi-final between the DPRK and ROK teams for the 2026 AFC U-20 Women's Asian Cup took place in Thailand on April 15 (local
A music and dance performance of the Mansudae Art Troupe was given at the East Pyongyang Grand Theatre on April 15 in celebration
April 17, 2026
A music and dance performance of the Mansudae Art Troupe was given at the East Pyongyang Grand Theatre on April 15 in celebration
The respected fatherly Marshal Kim Jong Un sent benevolent gifts to the orphans, primary school pupils and children across the
April 17, 2026
The respected fatherly Marshal Kim Jong Un sent benevolent gifts to the orphans, primary school pupils and children across the
Dmitri Medvedev, vice-chairman of the Security Council of Russia, made remarks at a meeting of the inter-institutional committee
April 16, 2026
Dmitri Medvedev, vice-chairman of the Security Council of Russia, made remarks at a meeting of the inter-institutional committee
State commendations were conferred on players and coaches who proved successful at international games and on members concerned. A
April 15, 2026
State commendations were conferred on players and coaches who proved successful at international games and on members concerned. A
The National Foodstuff Exhibition-2026 opened on April 13 under the sponsorship of the Ministry of Regional Industry. Presented to
April 15, 2026
The National Foodstuff Exhibition-2026 opened on April 13 under the sponsorship of the Ministry of Regional Industry. Presented to
DPRK player Kim Kwang Myong won a gold medal at the 2026 Asian Wrestling Championships held in Kyrgyzstan. In the 61kg category of
April 15, 2026
DPRK player Kim Kwang Myong won a gold medal at the 2026 Asian Wrestling Championships held in Kyrgyzstan. In the 61kg category of
Workers and members of the General Federation of Trade Unions of Korea met at the Central Hall of Workers on April 13 in celebrati
April 15, 2026
Workers and members of the General Federation of Trade Unions of Korea met at the Central Hall of Workers on April 13 in celebrati
A delegation of Russia’s independent federation of trade unions headed by Chairman Sergei Chernogayev arrived in Pyongyang on
April 15, 2026
A delegation of Russia’s independent federation of trade unions headed by Chairman Sergei Chernogayev arrived in Pyongyang on
"Spring holiday is eternal thanks to the Marshal", a performance of the art group members of the Pyongyang Students and Children’s
April 15, 2026
"Spring holiday is eternal thanks to the Marshal", a performance of the art group members of the Pyongyang Students and Children’s
An oratorical meeting was held at the People's Palace of Culture in Pyongyang on April 13 to mark the 114th birth anniversary of
April 15, 2026
An oratorical meeting was held at the People's Palace of Culture in Pyongyang on April 13 to mark the 114th birth anniversary of
A test-fire of strategic cruise missiles and anti-warship missiles was conducted again within the operational efficiency test
April 14, 2026
A test-fire of strategic cruise missiles and anti-warship missiles was conducted again within the operational efficiency test
The quarterfinal between the DPRK and Australian teams for the 2026 AFC U-20 Women's Asian Cup took place in Thailand on April 12
April 14, 2026
The quarterfinal between the DPRK and Australian teams for the 2026 AFC U-20 Women's Asian Cup took place in Thailand on April 12
The Brazilian president criticized the US for threatening the world at an event held on April 10. Saying that the US ruler is
April 14, 2026
The Brazilian president criticized the US for threatening the world at an event held on April 10. Saying that the US ruler is
House-moving is going on in Saeppyol Street of Pyongyang. The street was built with much care by the state to hand down to
April 14, 2026
House-moving is going on in Saeppyol Street of Pyongyang. The street was built with much care by the state to hand down to
A vigorous mass movement is being conducted in Jagang Province to create forests of economic value. As the second-stage forest
April 14, 2026
A vigorous mass movement is being conducted in Jagang Province to create forests of economic value. As the second-stage forest
The 79th enlarged meeting of the National Sports Guidance Committee took place on April 10. The meeting was presided over by Ri Il
April 13, 2026
The 79th enlarged meeting of the National Sports Guidance Committee took place on April 10. The meeting was presided over by Ri Il
Maria Zakharova, a spokeswoman for the Russian Ministry of Foreign Affairs, issued a commentary on April 6 to censure Japan and
April 13, 2026
Maria Zakharova, a spokeswoman for the Russian Ministry of Foreign Affairs, issued a commentary on April 6 to censure Japan and
More Articles
