Page "International Mathematical Union" Paragraph 9

The IMU's members are Member Countries and each Member country is represented through an Adhering Organization, which may be its principal academy, a mathematical society, its research council or some other institution or association of institutions, or an appropriate agency of its government.

A country starting to develop its mathematical culture and interested in building links to mathematicians all over the world is invited to join IMU as an Associate Member.

For the purpose of facilitating jointly sponsored activities and jointly pursuing the objectives of the IMU, multinational mathematical societies and professional societies can join IMU as an Affiliate Member.

Every four years the IMU membership gathers in a General Assembly ( GA ) which consists of delegates appointed by the Adhering Organizations, together with the members of the Executive Committee.

All important decisions are made at the GA, including the election of the officers, establishment of commissions, the approval of the budget, and any changes to the statutes and by-laws.