A difícil aceitação dos números negativos: um estudo da teoria dos números de Peter Barlow (1776-1862)

The present study seeks to present a historico-epistemological analysis of the development of the mathematical concept of negative number. In order to do so, we analyzed the different forms and conditions of the construction of mathematical knowledge in different mathematical communities and, thus, identified the characteristics in the establishment of this concept. By understanding the historically constructed barriers, especially, the ones having ontologicas significant, that made the concept of negative number incompatible with that of natural number, thereby hindering the development of the concept of negative, we were able to sketch the reasons for the rejection of negative numbers by the English author Peter Barlow (1776 -1862) in his An Elementary Investigation of the Theory of Numbers, published in 1811. We also show the continuity of his difficulties with the treatment of negative numbers in the middle of the nineteenth century

Desejo, estilo de vida e transgressão da identidade em Dancer from the dance de Andrew Holleran e Pela noite de Caio F.

From the research and awareness of literary work, this thesis discusses aspects related to the study of homoeroticism and lifestyles in the works Dancer from the Dance (2001) by Andrew Holleran and Pela noite (2010) by Brazilian author Caio Fernando Abreu. Whereas issues about beauty, desire and lifestyle shape cutouts important to the narrative, I propose a discussion by examining the works that mark from the first moments of sexual release party in New York with the peculiarities of their own styles that characterized the Andrew Holleran characters rostificadas by an ethos that he composed during this time opening for freedom of sexual deviant sexualities. In Pela noite, we reiterate a continuation of opening moment in Brazil for gay characters Caio , assuming the early 1980s for those characters is the first " shadows " of AIDS and knowledge of self , in which his characters living with fear, anonymity and reminiscences of homophobia as a backdrop to the discussions that are triggered off by the author . To compose a theoretical framework to subsidize this work , we selected the works of Michel Foucault (2007 , 2010a , 2010b ) , Eve Kosofsky Sedgwick (2008 ) , Didier Eribon (2008 ) , David Cartier (2004 ) , David Eisenbach (2006 ) and other contributions that were undoubtedly essential to this endeavor