petitio principii


Also found in: Thesaurus, Wikipedia.
Related to petitio principii: ignoratio elenchi

pe·ti·ti·o prin·ci·pi·i

 (pə-tĭsh′ē-ō′ prĭn-sĭp′ē-ē′, -ē-ī′)
n. Logic
The fallacy of assuming in the premise of an argument that which one wishes to prove in the conclusion; a begging of the question.

[Medieval Latin petītiō prīncipiī : Latin petītiō, request + Latin prīncipiī, genitive of prīncipium, beginning.]

petitio principii

(pɪˈtɪʃɪˌəʊ prɪnˈkɪpɪˌaɪ)
n
(Logic) logic a form of fallacious reasoning in which the conclusion has been assumed in the premises; begging the question. Sometimes shortened to: petitio
[C16: Latin, translation of Greek to en arkhei aiteisthai an assumption at the beginning]

pe•ti•ti•o prin•ci•pi•i

(pɪˈtɪʃ iˌoʊ prɪnˈsɪp iˌaɪ; Lat. pɛˈti tɪˌoʊ prɪŋˈkɪp ɪˌi)
n.
a fallacy in reasoning resulting from the assumption of that which in the beginning was set forth to be proved.
[1525–35; < Medieval Latin petītiō prīncipiī, translation of Greek tò en archêi aiteîsthai the assumption at the outset]
ThesaurusAntonymsRelated WordsSynonymsLegend:
Noun1.petitio principii - the logical fallacy of assuming the conclusion in the premises; begging the question
logical fallacy - a fallacy in logical argumentation
References in periodicals archive ?
As a critique of EMH it commits the error of petitio principii.
Most importantly, we suspend our awareness that fictional worlds are worlds that exist only because their existence has been declared by the text, and this is, of course, a petitio principii.
Cualquier argumento valido que pueda proponerse en contra debe ser del tipo de la petitio principii.
This paper develops an account of petitio principii (the fallacy sometimes also called "vicious circularity" or "begging the question") which has two crucial features: it employs the notion of doxastic justification, and it takes circularity to be relative to an evidential state.
La "circularidad" y petitio principii que "encuentra" Alfaro a inicios de LSM (y sobre la que luego insiste), en cuanto a la definicion de lo cotidiano y su relacion con la politica, solamente se encuentra en la falacia que construyo el mismo Alfaro (9).
Una petitio principii en el argumento de Rawls del consenso entrecruzado?
Simplemente sobre la base del estandar de pretension de justicia, uno estaria habilitado para abordar la cuestion de la justicia del Derecho positivo sin caer en una petitio principii o en una clara contradiccion, como parece ser el destino del iusnaturalismo "excluyente".
En efecto, Durkheim volvia a quedar enredado en una de las petitio principii tan presentes en sus planteamientos (Lukes, 1984: 31-32).
Poincare was more generally concerned with various cases of such a petitio principii.
Um raciocinio como aquele de Wachter--'deve-se reconhecer, pois, que ele queria coisa conforme a justica, que ele acreditava estar em seu direito, que, pois, existe o fato da bona fides,'--e uma mera petitio principii, a qual pressupoe como estabelecido o conceito na bona fides que esta para ser demonstrada".