What is a Fortiori analysis

The argumentum a fortiori (argumentum a maiore ad minus, argumentum a minore ad maius)

Legal Logic pp 146-151 | Cite as


In jurisprudence, one often inferences from the validity of a more extensive legal norm to the validity of a less extensive legal norm366. This type of argumentation often goes hand in hand with the use of the phrase “even more so”, for example in the sense that one says: “If the stronger legal norm applies, the weaker legal norm must apply all the more.” B. to consider the legal norm with the less strict requirements or the more extensive legal consequence, as "weaker" the legal norm with the stricter requirements and the less extensive legal consequence.

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  1. See also Kalinowski, Introduction à la logique juridique, Paris 1965, pp. 162 ff .; C. E. Alchourron, Juristic conclusions a fortiori and a pari, ARSP, Supplement No. 41, pp. 5 ff. (1965). Google Scholar

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© Springer-Verlag Berlin Heidelberg 1982

Authors and Affiliations

  1. 1. Institute for Crime Science, University of Albertus Magnus-Platz, Cologne 41, Germany