Poincaré–Birkhoff theorem

Summary

Poincaré–Birkhoff theorem is a fixed-point theorem^[1]. It draws 71 Wikipedia views per month (fixed_point_theorem category, ranking #8 of 14).^[2]

Key Facts

• Poincaré–Birkhoff theorem is credited with the discovery of Henri Poincaré^[3].
• Poincaré–Birkhoff theorem's instance of is recorded as fixed-point theorem^[4].
• Poincaré–Birkhoff theorem's instance of is recorded as theorem^[5].
• Henri Poincaré is named after Poincaré–Birkhoff theorem^[6].
• George David Birkhoff is named after Poincaré–Birkhoff theorem^[7].
• Poincaré–Birkhoff theorem's time of discovery or invention is recorded as 1912^[8].
• Poincaré–Birkhoff theorem's maintained by WikiProject is recorded as WikiProject Mathematics^[9].

Body

Definition and Type

Recorded instance of include fixed-point theorem^[4] and theorem^[5].

Origins

Things named after include Henri Poincaré^[6], a mathematician^[10], 1854–1912^[11], of France^[12], awarded the Poncelet Prize^[13], specialised in algebraic geometry^[14] and George David Birkhoff^[7], a mathematician^[15], 1884–1944^[16], of United States^[17], awarded the Bôcher Memorial Prize^[18], specialised in topology^[19].

Why It Matters

Poincaré–Birkhoff theorem draws 71 Wikipedia views per month (fixed_point_theorem category, ranking #8 of 14).^[2] It has Wikipedia articles in 6 language editions, a strong signal of global cultural recognition.^[20] It is known by 4 alternative names across languages and contexts.^[21]