The International Day of Mathematics (IDM) is a worldwide celebration. Each year on March 14 all countries will be invited to participate through activities for both students and the general public in schools, museums, libraries and other spaces.
March 14 is already celebrated in many countries as Pi Day because that date is written as 3/14 in some countries and the mathematical constant Pi is approximately 3.14.
The International Day of Mathematics is a project led by the International Mathematical Union with the support of numerous international and regional organizations.
On March 14, 2020, the International Day of Mathematics had its first edition.
Take a look back at the celebration, and learn more about its theme, the worldwide video challenge and its global live launch.
Join the 2021 celebration
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A new theme every year
Every year we'll announce a new theme to flavor the celebration, spark creativity and bring light to connections between mathematics and all sorts of fields, concepts and ideas.
The theme for 2021 is Mathematics for a Better World
As the world faces the COVID-19 pandemic, mathematics provides its models and tools to help us understand, monitor, and control the spread of the virus. It is also used to create weather forecasts and prepare for natural disasters. It warns us of climate change and helps us to anticipate and mitigate its consequences.
Mathematics is central to the efficient organization of societies for the benefit of all citizens. It optimizes transportation and communication networks and enables smart planning and management of health, economic, and social systems. Science and mathematics have a crucial role in steering decisions to promote peace and social justice.
As a common language to the planet, mathematics is an essential part of humankind’s cultural heritage. It is present in arts, music, and games, for human enjoyment and well-being.Visit the Mathematics for a Better World website
Support for the International Day of Mathematics
The International Day of Mathematics (IDM) is supported by the following international and regional organizations:
- The International Council of Industrial and Applied Mathematics (ICIAM),
- The Committee for Women in Mathematics of IMU (CWM),
- The International Commission on Mathematical Instruction (ICMI),
- The African Mathematical Union (AMU),
- The European Mathematical Society (EMS),
- The Mathematical Council of the Americas (MCA)
- The Unión Matemática de América Latina y el Caribe (UMALCA),
- The Southeast Asian Mathematical Society (SEAMS)
- The Southern Africa Mathematical Sciences Association (SAMSA)
- The International Centre for Theoretical Physics (ICTP)
- The Centre international de mathématiques pures et appliquées (CIMPA)
- The Organization for Women in Science for the Developing World (OWSD)
- The African Women in Mathematics Association (AWMA)
- The African Mathematical Union Commission of African Women in Mathematics (AMU-CAWM)
- The European Women in Mathematics (EWM)
- The International Science Council (ISC)