The permutational literature is a technique of comparative language research.
In the renaissance, the permutatio litterarum, comparing languages based on their vocabulary, in which words from different languages were matched, were used in an subjective way. During the renaissance, linguistics and comparative linguistics made a renewal in which language scholars like Johannes de Laet suggested higher standards.
In this stricter methodology, there was no more space for associative equations.
The mathematical basis for the technique is that the permutation is a mathematical object that represents a specific arrangement of a number of objects or numbers, or, in this case, letters in a word.
An example of using the Permutatio litterarum is found in genealogy. When looking for relatives, variants of the surname are constructed. For the De La Force family, for example Delforce, Dellforce, Dalforce, Dulforce, Delafosse and Delfosse. There are twenty permutations of this name known.
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