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
Russian Presidential Aide Nikolai Patrushev called for bolstering up the naval forces in a diplomatic meeting on April 28. At
May 06, 2026
Russian Presidential Aide Nikolai Patrushev called for bolstering up the naval forces in a diplomatic meeting on April 28. At
The charge d'affaires ad interim of the Russian embassy in Pyongyang hosted a friendship gathering at Hwasong Kumgang Restaurant
May 06, 2026
The charge d'affaires ad interim of the Russian embassy in Pyongyang hosted a friendship gathering at Hwasong Kumgang Restaurant
The 24th Pyongyang Spring International Trade Fair opened. Presented to the fair on the theme of "For the common development and
May 06, 2026
The 24th Pyongyang Spring International Trade Fair opened. Presented to the fair on the theme of "For the common development and
As a new era of comprehensive rejuvenation is being ushered in, the foodstuff industry is also undergoing marked development and
May 06, 2026
As a new era of comprehensive rejuvenation is being ushered in, the foodstuff industry is also undergoing marked development and
Ponghak spring water, Rungnado ginkgo tree and Paektusan Rhodiola elongata have been registered as new natural monuments in the
May 06, 2026
Ponghak spring water, Rungnado ginkgo tree and Paektusan Rhodiola elongata have been registered as new natural monuments in the
Certificates of best scientist and technician of the DPRK in 2025 were awarded to seven scientists and technicians, who made
May 06, 2026
Certificates of best scientist and technician of the DPRK in 2025 were awarded to seven scientists and technicians, who made
The Ministry of Metallurgical Industry is striving to further refine the Korean-style iron- and steel-making methods. The ministry
May 06, 2026
The Ministry of Metallurgical Industry is striving to further refine the Korean-style iron- and steel-making methods. The ministry
The participants in the Eleventh Congress of the Socialist Patriotic Youth League visited the Memorial Museum of Combat Feats at
May 05, 2026
The participants in the Eleventh Congress of the Socialist Patriotic Youth League visited the Memorial Museum of Combat Feats at
The Russian Foreign Ministry issued a statement on April 27 to criticize the anti-Russian sanctions of the European Union. The EU
May 05, 2026
The Russian Foreign Ministry issued a statement on April 27 to criticize the anti-Russian sanctions of the European Union. The EU
The Flower Festival-2026 took place at the Okryu Exhibition House on the banks of the picturesque Taedong River. The festival,
May 05, 2026
The Flower Festival-2026 took place at the Okryu Exhibition House on the banks of the picturesque Taedong River. The festival,
A national industrial design exhibition, which opened on April 8 in commemoration of April 15, the birth anniversary of President
May 05, 2026
A national industrial design exhibition, which opened on April 8 in commemoration of April 15, the birth anniversary of President
Artistes of Russia, China, Vietnam and Laos who took part in the 34th April Spring Friendship Art Festival put colourful pieces of
May 05, 2026
Artistes of Russia, China, Vietnam and Laos who took part in the 34th April Spring Friendship Art Festival put colourful pieces of
The first-term camping began at the Kyongsong Children's Camp. A ceremony of kicking-off the camping took place on the spot on May
May 05, 2026
The first-term camping began at the Kyongsong Children's Camp. A ceremony of kicking-off the camping took place on the spot on May
The 39th National Festival of Science and Technology is going on at the Sci-Tech Complex in Pyongyang. The State Academy of
May 05, 2026
The 39th National Festival of Science and Technology is going on at the Sci-Tech Complex in Pyongyang. The State Academy of
Spring tree planting is brisk in different parts of the DPRK. The Ministry of Land and Environment Protection examined the plans
May 04, 2026
Spring tree planting is brisk in different parts of the DPRK. The Ministry of Land and Environment Protection examined the plans
Meetings took place in China, Pakistan, Norway, Denmark, Romania, Switzerland, Sweden, Iceland, France, Finland and Nigeria in
May 04, 2026
Meetings took place in China, Pakistan, Norway, Denmark, Romania, Switzerland, Sweden, Iceland, France, Finland and Nigeria in
The World Meteorological Organization announced on April 24 that it is anticipated that El Nino will occur from the middle of this
May 04, 2026
The World Meteorological Organization announced on April 24 that it is anticipated that El Nino will occur from the middle of this
A spokesman for the Chinese Foreign Ministry censured the US for insulting his country’s AI industry development achievements at
May 04, 2026
A spokesman for the Chinese Foreign Ministry censured the US for insulting his country’s AI industry development achievements at
The participants in the Eleventh Congress of the Socialist Patriotic Youth League rendered labour assistance in the construction
May 04, 2026
The participants in the Eleventh Congress of the Socialist Patriotic Youth League rendered labour assistance in the construction
An endless stream of visitors flows into Saeppyol Street, which sprang up in Pyongyang as the epitome of reverence for the martyrs
May 04, 2026
An endless stream of visitors flows into Saeppyol Street, which sprang up in Pyongyang as the epitome of reverence for the martyrs
More Articles
