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Что (кто) такое Horn-clause - определение
CLAUSE (A DISJUNCTION OF LITERALS) WITH AT MOST ONE POSITIVE, I.E. UNNEGATED, LITERAL
Horn logic; Definite clause; Horn sentence; Horn clauses; Dual-Horn clause; Horn formula; Universal Horn theory; Horn Logic
Найдено результатов: 908
Horn clause
<logic> A set of atomic literals with at most one {positive
literal}. Usually written
L < - L1, ..., Ln
or
< - L1, ..., Ln
where n >= 0, " < - " means "is implied by" and comma stands for
conjuction ("AND"). If L is false the clause is regarded as
a goal. Horn clauses can express a subset of statements of
first order logic.
The name "Horn Clause" comes from the logician Alfred Horn,
who first pointed out the significance of such clauses in
1951, in the article "On sentences which are true of direct
unions of algebras", Journal of Symbolic Logic, 16, 14-21.
A definite clause is a Horn clause that has exactly one
positive literal.
(2000-01-24)
Horn clause
In mathematical logic and logic programming, a Horn clause is a logical formula of a particular rule-like form which gives it useful properties for use in logic programming, formal specification, and model theory. Horn clauses are named for the logician Alfred Horn, who first pointed out their significance in 1951.
definite clause
<logic> A Horn clause that has exactly one {positive
literal}.
(2000-01-24)
Independent clause
GRAMMATICAL CLAUSE THAT CAN BE A SENTENCE ON ITS OWN
Independent clauses; Main clause; Matrix clause; Principal clause; Main proposition
An independent clause (or main clause) is a clause that can stand by itself as a simple sentence. An independent clause contains a subject and a predicate and makes sense by itself.
main clause
GRAMMATICAL CLAUSE THAT CAN BE A SENTENCE ON ITS OWN
Independent clauses; Main clause; Matrix clause; Principal clause; Main proposition
¦ noun Grammar a clause that can form a complete sentence standing alone, having a subject and a predicate.
Content clause
CLAUSE ELABORATED BY A MAIN CLAUSE
That-clause; That clause; Declarative content clause; Interrogative content clause; Noun clause; Direct question; Indirect question; Reported question; Speech report
In grammar, a content clause is a dependent clause that provides content implied or commented upon by an independent clause. The term was coined by Danish linguist Otto Jespersen.
main clause
GRAMMATICAL CLAUSE THAT CAN BE A SENTENCE ON ITS OWN
Independent clauses; Main clause; Matrix clause; Principal clause; Main proposition
(main clauses)
N-COUNT
indirect question
CLAUSE ELABORATED BY A MAIN CLAUSE
That-clause; That clause; Declarative content clause; Interrogative content clause; Noun clause; Direct question; Indirect question; Reported question; Speech report
(indirect questions)
An indirect question is the same as a reported question
. (mainly BRIT)
. (mainly BRIT)
N-COUNT
reported question
CLAUSE ELABORATED BY A MAIN CLAUSE
That-clause; That clause; Declarative content clause; Interrogative content clause; Noun clause; Direct question; Indirect question; Reported question; Speech report
(reported questions)
A reported question is a question which is reported using a clause beginning with a word such as 'why' or 'whether', as in 'I asked her why she'd done it'. (BRIT)
= indirect question
N-COUNT
indirect question
CLAUSE ELABORATED BY A MAIN CLAUSE
That-clause; That clause; Declarative content clause; Interrogative content clause; Noun clause; Direct question; Indirect question; Reported question; Speech report
¦ noun Grammar a question in reported speech (e.g. they asked who I was).
Википедия
Horn clause
In mathematical logic and logic programming, a Horn clause is a logical formula of a particular rule-like form which gives it useful properties for use in logic programming, formal specification, and model theory. Horn clauses are named for the logician Alfred Horn, who first pointed out their significance in 1951.
