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
Belarus President Alexander Lukashenko said at a talk on January 19 that the country should develop its economy by its own
January 27, 2026
Belarus President Alexander Lukashenko said at a talk on January 19 that the country should develop its economy by its own
The German prime minister at a press conference on January 19 resisted the US’ tariff pressure in relation to the Greenland issue.
January 27, 2026
The German prime minister at a press conference on January 19 resisted the US’ tariff pressure in relation to the Greenland issue.
Construction projects conducive to developing the self-supporting economy have been completed one after another in different parts
January 27, 2026
Construction projects conducive to developing the self-supporting economy have been completed one after another in different parts
Ryu Kum Hui is one of the talented film artistes. Born in Hamhung City, South Hamgyong Province, she was gifted with a clear voice
January 27, 2026
Ryu Kum Hui is one of the talented film artistes. Born in Hamhung City, South Hamgyong Province, she was gifted with a clear voice
The Musan Mining Complex carried out the blasting of one million cubic metres of earth on January 25. The successful blasting
January 27, 2026
The Musan Mining Complex carried out the blasting of one million cubic metres of earth on January 25. The successful blasting
Kimchi is one of the typical foods of the DPRK. A unique processed vegetable made through lactic fermentation of vegetable, kimchi
January 27, 2026
Kimchi is one of the typical foods of the DPRK. A unique processed vegetable made through lactic fermentation of vegetable, kimchi
The Pukchang Thermal Power Complex is bringing about a great upsurge in production. Last year the complex conducted maintenance
January 27, 2026
The Pukchang Thermal Power Complex is bringing about a great upsurge in production. Last year the complex conducted maintenance
On January 18, Denmark, Finland, France, Germany, the Netherlands, Norway, Sweden and the UK issued a joint statement against the
January 26, 2026
On January 18, Denmark, Finland, France, Germany, the Netherlands, Norway, Sweden and the UK issued a joint statement against the
The prime minister of Greenland reaffirmed the stand to defend the right to self-determination on January 19. The oppressive moves
January 26, 2026
The prime minister of Greenland reaffirmed the stand to defend the right to self-determination on January 19. The oppressive moves
Modern rural dwellings are springing up one after another in Kangwon Province amid the news of ceremonies of moving into new
January 26, 2026
Modern rural dwellings are springing up one after another in Kangwon Province amid the news of ceremonies of moving into new
Sariwon Ri Kye Sun University of Education has been newly built in North Hwanghae Province. The university has school buildings,
January 26, 2026
Sariwon Ri Kye Sun University of Education has been newly built in North Hwanghae Province. The university has school buildings,
The Farm Machine Institute has been successfully built as the central base for leading the comprehensive mechanization of
January 26, 2026
The Farm Machine Institute has been successfully built as the central base for leading the comprehensive mechanization of
A fish pickling workshop has been built at the Hanchon Fishery Station. The construction of the base for producing various kinds
January 26, 2026
A fish pickling workshop has been built at the Hanchon Fishery Station. The construction of the base for producing various kinds
Kim Jong Un, general secretary of the Workers' Party of Korea and president of the State Affairs of the Democratic People's
January 26, 2026
Kim Jong Un, general secretary of the Workers' Party of Korea and president of the State Affairs of the Democratic People's
The Iraqi government on January 18 announced the US-led international allied forces completely withdrew from military bases in the
January 25, 2026
The Iraqi government on January 18 announced the US-led international allied forces completely withdrew from military bases in the
According to an American organization, more than 400 large-scale shooting cases occurred in the US last year, causing over 40 000
January 25, 2026
According to an American organization, more than 400 large-scale shooting cases occurred in the US last year, causing over 40 000
Fairyland villages were built in different farms in Junghwa and Singye counties of North Hwanghae Province, epitomizing the change
January 25, 2026
Fairyland villages were built in different farms in Junghwa and Singye counties of North Hwanghae Province, epitomizing the change
Kim Jong Un, general secretary of the Workers’ Party of Korea and president of the State Affairs of the Democratic People’s
January 25, 2026
Kim Jong Un, general secretary of the Workers’ Party of Korea and president of the State Affairs of the Democratic People’s
The Workers’ Party of Korea is organizing and conducting in a bold way the work to realign the farm fields of the country into
January 24, 2026
The Workers’ Party of Korea is organizing and conducting in a bold way the work to realign the farm fields of the country into
European countries are strongly resisting the US’ threat to impose from February 1 10 percent tariff on those countries which do n
January 24, 2026
European countries are strongly resisting the US’ threat to impose from February 1 10 percent tariff on those countries which do n
More Articles
