Jusletter IT

The Logical Structure of a Legal System Proving the Validity of Law

  • Author: Hajime Yoshino
  • Category: Short Articles
  • Region: Japan
  • Field of law: Legal Theory
  • Collection: Festschrift Erich Schweighofer
  • Citation: Hajime Yoshino, The Logical Structure of a Legal System Proving the Validity of Law, in: Jusletter IT 22 February 2011
This paper clarifies the logical structure of a legal system in terms of the validity of legal sentences. The law must be legally valid in order that it can be applied to a concrete case. Legal rules which are applied to a case are to be proved as legally valid. How can this proof be done in law? In other words, what is the structure of legal system which enables the proof? The validity of a legal sentence can be proven if it is deduced from other valid legal sentences. Therefore, the logical structure of a legal system that makes such a deduction possible is clarified in this paper.

Inhaltsverzeichnis

  • 1. Introduction
  • 2. Structure of Legal Sentences as an Element of a Legal System
  • 2.1. Legal rule and fact sentences
  • 2.2. Legal elementary and complex sentences
  • 2.3. Legal object and meta-sentences
  • 3. Structure of Connection of Legal Sentences for a Legal System
  • 3.1. «AND» structure of the connection of legal sentences
  • 3.2. Connection of legal sentence in complex sentence
  • 3.3. Connection of object sentence with meta-sentence
  • 3.4. Connection of a legal meta-sentence with another meta-sentence
  • 4. Logical Structure of System of Law as a Whole
  • 4.1. Starting point and strategy: Systematization through legal reasoning
  • 4.2. Inference to decide legal relations
  • 4.3. Legal meta-inference
  • 4.4. The most fundamental legal meta-rule sentence regulating that a legal sentence is valid
  • 4.5. Fundamental legal meta-rule sentences regulating that a legal sentence becomes valid.
  • 4.6. Positive legal meta-rule sentences assisting fundamental legal meta-rule sentences
  • 4.6.1. Positive legal meta-rule sentences regulating the formation of legal sentences
  • 4.7. The validity of legal meta-rule sentences
  • 4.7.1. The validity of fundamental legal meta-rule sentences
  • 4.7.2. The validity of positive legal meta-rule sentences
  • 4.7.3. The level of the validity of positive legal meta-sentences
  • 4.7.4. The basic legal meta-sentences
  • 5. Conclusion

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