Knights of the Lambda Calculus

The Knights of the Lambda Calculus' recursive emblem celebrates LISP's theoretical foundation, the lambda calculus. Y in the emblem refers to the Fixed point combinator and the reappearance of the picture in itself refers to the recursion.

The Knights of the Lambda Calculus is a semi-fictional organization of expert LISP and Scheme hackers. The name refers to the lambda calculus, a mathematical formalism invented by Alonzo Church, with which LISP is intimately connected, and references the Knights Templar.

There is no actual organization that goes by the name Knights of the Lambda Calculus; it mostly only exists as a hacker culture in-joke. The concept most likely originated at MIT. For example, in the Structure and Interpretation of Computer Programs video lectures, one of the lecturers presents the audience with the button, saying they are now members of this special group. However, a "well-known LISPer" has been known to give out buttons with Knights insignia on them, and some people have claimed to have membership in the Knights.^[1]

In popular culture

A group that evolved from or is similar to them, called The Knights of Eastern Calculus make a major appearance in the anime series Serial Experiments Lain. References to MIT professors and other American computer scientists are prominent in Episode 11 of the series. At one point in the anime, Lain is seen with code displayed on her handheld device that appears to be LISP.^{[citation needed]}

Notes

References

This article was originally based on material from the Free On-line Dictionary of Computing, which is licensed under the GFDL.

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