Relationship proposition

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relations propositions constitute

item relations: a conceptual concrete objects. Lowercase letters.

relationship: a conceptual relationships between objects. Referred to as R

propositional relation general formula: R (a, b ...)

properties

and symmetry relations are transitive. Categories

Relation Proposition

proposition symmetry relations

Symmetry proposition means to determine whether the relationship between objects symmetrical relationship proposition

means between the object is symmetrical: for two specific objects a, b, when objects having a relation R between the object and b, b between the object and whether the object has a relation R, that is to say for In particular two objects a, b, true when a R b, b R a whether true. Based on this, the symmetry relation can be divided into n symmetrical relationship proposition proposition, the proposition semi-symmetrical relationship and antisymmetric relation proposition.

(1) symmetrical relationship: a relationship between the objects a and R b and also has a relation R

(2) antisymmetric relation between a and b objects: Objects with a having a relation between b and R b between the object must not have a relationship with a R

(3) half-symmetrical relationship: R having the relationship between the object and the object a and b between a and b is not necessarily have a relationship of R

transitive relationship proposition

transitive relationship proposition proposition means to determine whether the relationship between the transfer object. It can transfer means between objects: For three or three (or more) objects a, b, c, when the object between the object b having a relation R, also has the relationship between objects and object b c when R, between a target and whether the object has a relation c R, that is to say for three or three types of objects a, b, c, true when a R b, b R c true, a R c if also true. Based on this, transitive relationship propositions can be classified into positive transfer relationship proposition, the proposition semi-transfer relationship and the relationship between the inverse transfer proposition

(1) Proposition positive transfer relationship: when the object between the object b having a relationship R when, between the object and the object b c also has a relation R, a and c have a certain relationship.

(2) Anti-transfer relationship Proposition: When R have a relationship between objects and object b a, b between the object and the object have a relation R c, a and c do not have this certain relationship.

(3) half-transfer relationship proposition: when R have a relationship between objects and object b a, b between the object and the object have a relation R c, a and c do not necessarily have this relationship.

reflexive relationship proposition

(1) reflexive relation: reflexive relationship is a relationship of things with itself. Such as: He committed suicide.

(2) non-reflexive relationships: itself can not occur. Such as: aggression, oppression. How much

relation to major items

reflexive relations have a primary term relationship, it is a relationship. Symmetry relations There are two main items of the relationship, the relationship is two. Transitive relationship has three main items of both the above relation, is a number of relationships.

Relation Proposition reasoning

relationship is the relationship between propositional reasoning premised proposition, and the introduction of a new relationship proposition for the conclusion of a logical reasoning based on relations feature propositions.

relations proposition reasoning is a simple proposition reasoning.

as: Wang and Zhang classmates.

So Zhang and Wang were classmates. Species