🔬 Discovery

Kerala school infinite series

Series infinitas para seno, coseno y pi (escuela de Kerala)

Date
c. 1400 · confidence medium
Place
Sangamagrama (Irinjalakuda), Kerala, India
Credited to
Madhava of Sangamagrama
People
👤 Madhava de Sangamagrama1340–1425
Field
Knowledge & symbols

⚠️ Disputed: the sources disagree.

What was discovered

Power series expansions for sine, cosine and arctangent, including the series pi/4 = 1 - 1/3 + 1/5 - ..., with estimates of the error term. They anticipate Newton, Gregory and Leibniz by more than two centuries.

The results are known through the Yuktibhasa (c. 1530); there is no evidence of transmission to Europe, and the series were independently rediscovered in the 17th century.

What it led to

  • calculation of pi to eleven decimal places
  • the mathematics of Nilakantha and Jyesthadeva
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Sources✓ verified 2026-09-25