\subseteq
Like a U on its right side with a line under it. For sets x and y, x \subseteq y
if all elements of x are also elements of y.
(1995-02-03)
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Subset-Equational Language
(SEL) A declarative language for set processing by Bharat Jayaraman with subset
and equational program clauses; pattern matching over sets (it supports
efficient iteration over sets); annotations to say which functions distribute
over union in which arguments (for point-wise/incremental computation over
sets); defining transitive closures through circular constraints (implemented by
mixed top-down/memoisation and bottom-up strategy); meta-programming and simple
higher-order programming; modest user-interface including tracing.
The SEL compiler, written in Quintus Prolog, generates WAM-like code, extended
to deal with set-matching, memoisation, and the novel control structure of the
language. The run-time system is written in C.
ftp://ftp.cs.buffalo.edu/users/bharat/SEL2.
E-mail: Bharat Jayaraman <bharat@cs.buffalo.edu>.
["Towards a Broader Basis for Logic Programming", B. Jayaraman, TR CS Dept, SUNY
Buffalo, 1990].
["Set Abstraction in Functional and Logic Programming", F.S.K. Silbermann
<fs@cs.tulane.edu> et al, ACM Proc 1989].
(1994-12-15)
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