Letter

Transcribed from the printed issue; not yet reviewed. Read it in the PDF of the issue, page 19

I was pleased to see that discussion of J is beginning to appear in the Education Vector. J has a variety of ways of composing functions to produce new functions (using hooks and forks as well as several conjunctions) in addition to the well-known composition of mathematics; I believe that a simple unified introduction to the forms of composition would be helpful to readers of Education Vector. I therefore suggest that you invite submission of such an article.