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 Foreign Ministry spokeswoman Maria Zakharova said on SNS on November 1 that the US is the den of drug crimes. Censuring
November 08, 2025
Russian Foreign Ministry spokeswoman Maria Zakharova said on SNS on November 1 that the US is the den of drug crimes. Censuring
DPRK coach Ri Song Ho and DPRK player Choe Il Son were awarded the AFC Coach of the Year (Men) and the AFC Youth Player of the
November 08, 2025
DPRK coach Ri Song Ho and DPRK player Choe Il Son were awarded the AFC Coach of the Year (Men) and the AFC Youth Player of the
No Kwang Chol, minister of National Defence of the Democratic People's Republic of Korea, met and had a talk in a friendly
November 08, 2025
No Kwang Chol, minister of National Defence of the Democratic People's Republic of Korea, met and had a talk in a friendly
Modern houses have been built in Yonsu-ri of Yonsa County, North Hamgyong Province. The dwelling houses were designed in diverse
November 08, 2025
Modern houses have been built in Yonsu-ri of Yonsa County, North Hamgyong Province. The dwelling houses were designed in diverse
The AI Technology Institute of the AI Faculty of Kim Il Sung University, the IT Institute of Kim Chaek University of Technology,
November 08, 2025
The AI Technology Institute of the AI Faculty of Kim Il Sung University, the IT Institute of Kim Chaek University of Technology,
Talks took place between the representatives of the General Political Bureau of the Korean People's Army and the delegation of the
November 08, 2025
Talks took place between the representatives of the General Political Bureau of the Korean People's Army and the delegation of the
A deputy spokesman for the Iranian Foreign Ministry criticized the US politicians for having become completely intoxicated with
November 07, 2025
A deputy spokesman for the Iranian Foreign Ministry criticized the US politicians for having become completely intoxicated with
The semi-final between the DPRK and Brazilian teams for the 2025 FIFA U-17 Women's World Cup took place on November 5 (local
November 07, 2025
The semi-final between the DPRK and Brazilian teams for the 2025 FIFA U-17 Women's World Cup took place on November 5 (local
The 27th national exhibition of sports sci-tech achievements and the national symposium on teaching methods in the field of
November 07, 2025
The 27th national exhibition of sports sci-tech achievements and the national symposium on teaching methods in the field of
A national exhibition and presentation of forest sci-tech achievements were held at the Central Botanical Garden in Pyongyang from
November 07, 2025
A national exhibition and presentation of forest sci-tech achievements were held at the Central Botanical Garden in Pyongyang from
A delegation of the Military-Political General Department of the Armed Forces of the Russian Federation headed by Director Viktor
November 07, 2025
A delegation of the Military-Political General Department of the Armed Forces of the Russian Federation headed by Director Viktor
On the picturesque banks of the Pothong River meandering through downtown Pyongyang, there is the Pothong Riverside Terraced
November 07, 2025
On the picturesque banks of the Pothong River meandering through downtown Pyongyang, there is the Pothong Riverside Terraced
The delegation of the Military-Political General Department of the Armed Forces of the Russian Federation headed by Director
November 07, 2025
The delegation of the Military-Political General Department of the Armed Forces of the Russian Federation headed by Director
Scientists of the Nano-engineering Branch of the State Academy of Sciences developed a Korean-style technology of producing
November 07, 2025
Scientists of the Nano-engineering Branch of the State Academy of Sciences developed a Korean-style technology of producing
A spokesman for the Ministry of Commerce of China denounced the sanctions of the UK at a press conference on October 27.He denounc
November 06, 2025
A spokesman for the Ministry of Commerce of China denounced the sanctions of the UK at a press conference on October 27.He denounc
DPRK players returned home on November 4 after taking part in the Third Asian Youth Games held in Bahrain. They bagged eight gold
November 06, 2025
DPRK players returned home on November 4 after taking part in the Third Asian Youth Games held in Bahrain. They bagged eight gold
The people’s laughter is ringing out in Hwasong District of Pyongyang. Among the cultural amenities filled with their happy
November 06, 2025
The people’s laughter is ringing out in Hwasong District of Pyongyang. Among the cultural amenities filled with their happy
A photo exhibition "The Wonsan Kalma Coastal Tourist Area, a magnificent world created on the east coast in the great era of Kim
November 06, 2025
A photo exhibition "The Wonsan Kalma Coastal Tourist Area, a magnificent world created on the east coast in the great era of Kim
Officials of the Party, power and armed forces organs, ministries and national agencies of the DPRK visited the bier of Kim Yong
November 06, 2025
Officials of the Party, power and armed forces organs, ministries and national agencies of the DPRK visited the bier of Kim Yong
In recent years, irrigation has been introduced into hundreds of thousands of hectares of paddy and non-paddy fields across the
November 06, 2025
In recent years, irrigation has been introduced into hundreds of thousands of hectares of paddy and non-paddy fields across the
More Articles
