Papers
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This is a list of repositories of external papers, as well as stand-alone papers not part of a collection.
Eventually, they should be categorised.
- Sudley Place Bob Smith
- Jsoftware Roger Hui
- keiapl.org
- Dyalog external publications
- Software Preservation Group (subfolders in sidebar)
- APL-J Language Donald McIntyre
- Articles and APL Chronology (timeline with links) from SIGAPL
- A Personal History of APL by Michael S. Montalbano
- File:1 The Derivative Revisited.pdf
A fresh look at Ken Iverson's 1979 paper "The Derivative Operator" Mike Powell
In 1979 Ken Iverson wrote a paper on the derivative as part of the ACM APL Conference. That paper included a section summarizing the rules for the derivatives of compound formulations such as f×g. His summary omits the derivation of these rules. This article aims to restate these rules in more modern notation and provide derivations for Iverson's results. Mike Powell