New PDF release: From logic programming to Prolog

By Apt K.R.

ISBN-10: 013230368X

ISBN-13: 9780132303682

A distinct book that offers an advent to the idea of common sense programming and its software to Prolog courses. Covers programming concerns akin to termination, occur-check freedom, partial correctness and lack of runtime mistakes. Paper. DLC: common sense programming.

Show description

Read or Download From logic programming to Prolog PDF

Best object-oriented software design books

Get UML for Mere Mortals® PDF

Have to get effects with UML. .. with out pointless complexity or mind-numbing jargon? you wish UML for Mere MortalsR. This easy-to-read creation is ideal for technical pros and enterprise stakeholders alike: somebody who must create, comprehend, or overview UML versions, with out changing into a hard-core modeler.

Download PDF by Favre L.: UML and the Unified Process

Unified Modeling Language (UML), Unified approach (UP), and different details modeling equipment are addressed during this scholarly attention of the research, layout, and improvement of web-based and firm purposes. the most up-tp-date study on conceptual, theoretical, and empirical problems with modeling for on-line company and static info is equipped.

Get Objective-C: Visual QuickStart Guide PDF

Such a lot books on Objective-C are relatively prosaic, yet i love this book's association, which breaks the positive factors of objective-c into great chew measurement ideas. For the target programming naive developer, this gives a pleasant studying curve for changing into fluent in simple paradigms of Obj-C. i'd consult with Apple's most recent documentation at the evolving complex good points of Objective-C, which aren't lined in addition through Kaplan or Mark.

Download e-book for iPad: Software Project Management: A Unified Framework (The by Walker Royce

Software program venture administration offers a brand new administration framework uniquely fitted to the complexities of contemporary software program improvement. Walker Royce's pragmatic viewpoint exposes the shortcomings of many well-accepted administration priorities and equips software program pros with cutting-edge wisdom derived from his 20 years of profitable from the trenches venture administration event.

Additional info for From logic programming to Prolog

Example text

In Robinson’s algorithm it is a part of the test whether a pair of terms is simple. In most Prolog implementations for efficiency reasons the occur-check is omitted. By omitting the occur-check in action (5) and deleting action (6) from the Martelli– Montanari algorithm we are still left with two options depending on whether the substitution {x/t} is performed in t itself. If it is, then divergence can result, because x occurs in t implies that x occurs in t{x/t}. If it is not, then an incorrect result can be produced, as in the case of the single equation x = f (x) which yields the substitution {x/f (x)}.

Tn ) is a term. In particular every constant is a term. Terms are denoted by s, t, u, w, . .. A term with no variables is called ground . By Var (t) we denote the set of variables occurring in t. By a subterm of a term s we mean a substring of s which is again a term. If w is a subterm of s, then we say that w occurs in s. In general, there can be several occurrences of a given subterm in a term — take for example f (x) and g(f (x), f (x)). By definition, every term is a subterm of itself.

These two possibilities for failure are present in all unification algorithms. The second of them is called the occur-check failure. 6, after presenting unification algorithms. We present here two such algorithms. To prove their correctness the following simple lemma will be needed. 11 (Binding) For a variable x and a term t, xθ = tθ iff θ = {x/t}θ. Proof. First, note that x{x/t}θ = tθ, so xθ = tθ iff xθ = x{x/t}θ. Moreover, for y = x we have y{x/t} = y, so yθ = y{x/t}θ. Thus xθ = x{x/t}θ iff θ = {x/t}θ.

Download PDF sample

From logic programming to Prolog by Apt K.R.


by Robert
4.3

Rated 4.34 of 5 – based on 3 votes