RFC154 - Exposition Style

　　 
　　Network Working Group S. Crocker
Request for Comments: #154 UCLA
NIC: #6759 12 May 1971
Categories: C.4
Updates: #107
Obsoletes: #132

Exposition Style

As a pedagogical device for describing functions such as the one
below

|
| +-----------------
| /:
| / :
| / :
| / :
| / :
| / :
-----+------------------------------------
| a
|

where two formulae, f1 and f2, are necessary for adjoining domains but
the function is continous at the boundary point, I usually write the
description in the form

f(x) = f1(x) for x =< a
f(x) = f2(x) for x >= a

The astute reader will note that the domains overlap, but that
f1(a) = f2(a), so no semantic ambiguity obtains.

[ This RFCwas put into machine readable form for entry ]
[ into the online RFCarchives by Naoki Matsuhira 5/97 ]

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