Assuming that public action can modify the prestige of a language in order to avoid language extinction, we analyze two cases: (i) the prestige can only take two values, (ii) it can take any value but its change at each time step is bounded.
Indeed, as mentioned before for the shrinking of the viability kernel, a high value of a means that agents rarely change their language and the effects of increasing or decreasing the prestige of a language become less effective.
The prestige of a language has been considered as one of the main factors affecting language competition since Labov's Sociolinguistic Patterns [22].
Largely as a result of social pressure and the prestige of the language, by the mid-20th century a large majority of Bruxellois spoke French.
Even when there is persecution, the challenge, as Harrison sees it, is to "increase the prestige of a language so that the young embrace it".
Several hundred monumental inscriptions found in Cambodia, southern Vietnam, and parts of Thailand, dating from the 7th to the 15th century, attest to the former widespread use and prestige of the language.
The most important thing is to raise the prestige of a language, to value it and to make it seem valuable and prestigious, especially in the eyes of the very youngest members of the communities because they will be making the decisions about whether to keep or abandon it.
Within our current framework, the maintenance of a bilingual society is shown to be possible by introducing the prestige of a language as a control variable.
Another perturbation to the system can be due to an abrupt change in the prestige of a language because of political actions such as invasion, occupation, etc.
In the paper, we have analyzed the role played by the two parameters of the model: the prestige
The analytical study of the model and the fitting to real data from the competition between Quechua-Spanish, Scottish Gaelic-English and Welsh-English, predict that the coexistence of two languages is unstable, irrespective of the prestige of the languages and their initial density of speakers in the model, in contrast to the evidence that bilingual societies exist today.
