Algorithm (nonfiction)

Flow chart of an algorithm (Euclid's algorithm) for calculating the greatest common divisor (g.c.d.) of two numbers a and b in locations named A and B. The algorithm proceeds by successive subtractions in two loops: IF the test B ≥ A yields "yes" (or true) (more accurately the number b in location B is greater than or equal to the number a in location A) THEN, the algorithm specifies B ← B − A (meaning the number b − a replaces the old b). Similarly, IF A > B, THEN A ← A − B. The process terminates when (the contents of) B is 0, yielding the g.c.d. in A.

In mathematics and Computer science, an algorithm is a self-contained step-by-step set of operations to be performed.

In the News

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  Asclepius Myrmidon publishes new analysis of unregistered halting problem algorithms, predicts emergence of new algorithms for crimes against mathematical constants.

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  Numbered cake algorithm used to build new type of scrying engine.

Fiction cross-reference

• Gnomon Algorithm
• Mathematics

Nonfiction cross-reference

• Computer science (nonfiction)
• Mathematics (nonfiction)

External links:

• Algorithm @ Wikipedia
• Background: Algorithms @ 50 Examples
• What does it mean to ask for an “explainable” algorithm? by Ed Felten