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- Path: sparky!uunet!softrue!kearns
- From: kearns@softrue.UUCP (Steven Kearns)
- Newsgroups: comp.specification
- Subject: Re: Theoretical limitations of algebraic specifications?
- Message-ID: <36.UUL1.3#8618@softrue.UUCP>
- Date: Wed, 30 Dec 92 22:41:57 PDT
- References: <1992Dec31.000439.8884@gmuvax2.gmu.edu>
- Organization: Software Truth
- Lines: 24
-
- > I have been struggling with an algebraic spec for a couple of days and
- > ...
- > More specifically, I am trying to specify a tree that has the notion of
- > a "current node", and operations to change the current node. The ....
- > Jeff Offutt
- > Department of ISSE, George Mason University, Fairfax VA
- > email: ofut@gmuvax2.gmu.edu
- > phone: (703) 993-1654 (messages: 993-1640)
-
- It has been shown that Majester's stack (sp?), which is a stack with
- a pointer to an arbitrary element (if memory serves), requires an infinite
- set of algebraic axioms to specify.
-
- The practical point is that algebraic specs are very poor at
- describing objects with state. If you want to describe such an
- object, use a model based spec language (such as Z).
-
- -steve
-
- ********************************************************
- * Steven Kearns ....uunet!softrue!kearns *
- * Software Truth softrue!kearns@uunet.uu.net *
- ********************************************************
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