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 press secretary Dmitri Peskov at a press conference on March 6 gave Finland a warning as to its announcement
March 12, 2026
Russian presidential press secretary Dmitri Peskov at a press conference on March 6 gave Finland a warning as to its announcement
The 25th Winter Paralympics opened in Italy on March 6. At the opening ceremony held on the theme of “Active life”, the
March 12, 2026
The 25th Winter Paralympics opened in Italy on March 6. At the opening ceremony held on the theme of “Active life”, the
Kim Jong Un, general secretary of the Workers’ Party of Korea, sent a reply message to Thongloun Sisoulith, general secretary of
March 12, 2026
Kim Jong Un, general secretary of the Workers’ Party of Korea, sent a reply message to Thongloun Sisoulith, general secretary of
Amid the continued tests of operational efficiency of the destroyer Choe Hyon of the Navy of the Korean People's Army, a strategic
March 11, 2026
Amid the continued tests of operational efficiency of the destroyer Choe Hyon of the Navy of the Korean People's Army, a strategic
Russian Foreign Minister Sergey Lavrov denounced the West’s policy hostile toward his country on March 5. The aim of the
March 11, 2026
Russian Foreign Minister Sergey Lavrov denounced the West’s policy hostile toward his country on March 5. The aim of the
The 2026 AFC Women’s Asian Cup is under way in Australia.Divided into three groups, twelve teams play league matches, and winners
March 11, 2026
The 2026 AFC Women’s Asian Cup is under way in Australia.Divided into three groups, twelve teams play league matches, and winners
A spokesman for the Chinese Defense Ministry at a press conference on March 6 expressed the stand to safeguard the national
March 11, 2026
A spokesman for the Chinese Defense Ministry at a press conference on March 6 expressed the stand to safeguard the national
The machine-building industry sector is working hard to consolidate its material and technical foundations. The Ryongsong Machine
March 11, 2026
The machine-building industry sector is working hard to consolidate its material and technical foundations. The Ryongsong Machine
Production is going on at the modern regional-industry factories built as the first outcomes of the regional development policy of
March 11, 2026
Production is going on at the modern regional-industry factories built as the first outcomes of the regional development policy of
The Kazakh government recently announced a plan for the conservation and sustainable use of biodiversity. The plan reflects the
March 10, 2026
The Kazakh government recently announced a plan for the conservation and sustainable use of biodiversity. The plan reflects the
An event took place at the Rungna People’s Sports Park in Pyongyang on March 8 to mark the AFC Women’s Football Day.Present there
March 10, 2026
An event took place at the Rungna People’s Sports Park in Pyongyang on March 8 to mark the AFC Women’s Football Day.Present there
A national meeting took place at the People's Palace of Culture in Pyongyang on March 18, the 116th International Women's Day.
March 10, 2026
A national meeting took place at the People's Palace of Culture in Pyongyang on March 18, the 116th International Women's Day.
The National Inter-provincial Riding Contest-2026 was held at the Mirim Riding Club in Pyongyang, the capital of the DPRK, to mark
March 10, 2026
The National Inter-provincial Riding Contest-2026 was held at the Mirim Riding Club in Pyongyang, the capital of the DPRK, to mark
Women across the DPRK commemorated the 116th March 8 International Women's Day. Many people visited the Kumsusan Palace of the
March 10, 2026
Women across the DPRK commemorated the 116th March 8 International Women's Day. Many people visited the Kumsusan Palace of the
A dance party of women’s union officials and members took place at the plaza of the Arch of Triumph in Pyongyang on March 8, the 1
March 10, 2026
A dance party of women’s union officials and members took place at the plaza of the Arch of Triumph in Pyongyang on March 8, the 1
According to data available, well over 70 000 tall trees of dozens of species including zelkova, Korean spruce and white birch
March 10, 2026
According to data available, well over 70 000 tall trees of dozens of species including zelkova, Korean spruce and white birch
As the whole country is brimming with love and respect for and warm congratulations to the women who are building the bright
March 09, 2026
As the whole country is brimming with love and respect for and warm congratulations to the women who are building the bright
Greeting March 8, I, with my warmest feelings, extend congratulations to all our Korean women, for whom I have affection and respe
March 09, 2026
Greeting March 8, I, with my warmest feelings, extend congratulations to all our Korean women, for whom I have affection and respe
Laotian Prime Minister Sonexay Siphandone called for developing agriculture by relying on their own efforts in a speech at a
March 09, 2026
Laotian Prime Minister Sonexay Siphandone called for developing agriculture by relying on their own efforts in a speech at a
Mass rallies took place in cities and counties of the DPRK on March 6 and 7 to vow to implement the decisions of the Ninth
March 09, 2026
Mass rallies took place in cities and counties of the DPRK on March 6 and 7 to vow to implement the decisions of the Ninth
More Articles
