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Everything about Rod calculus

Calculating method used in ancient China

Rod calculus or rod calculation was the mechanical method of algorithmic computation with counting rods in China from the Warring States to Ming dynasty before the counting rods were increasingly replaced by the more convenient and faster abacus. Rod calculus played a key role in the development of Chinese mathematics to its height in the Song dynasty and Yuan dynasty, culminating in the invention of polynomial equations of up to four unknowns in the work of Zhu Shijie. Wikipedia →

🧭 Start here: a 6-step reading path

  1. Read the overview: Rod calculusA 5-minute orientation
  2. Pick up a classic book: Art religieux du XIIIe siècle en FranceThe most-reprinted book on the subject
  3. Read the landmark paper: Kronecker products and matrix calculus in system theoryCited 1,528 times
  4. Go sideways: FractionA closely related topic
  5. Go sideways: Counting rodsA closely related topic

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