Pla i Carrera, Josep2019-05-072019-05-0719800214-1493https://hdl.handle.net/2445/132748This work deals wíth the axiomatic system of KEISLER on the hyperreals numbers .The main result ís to prove that the expressíons S of type3 p.application/pdfcat(c) Universitat Autònoma de Barcelona, 1980Lògica matemàticaMathematical logicinfo:eu-repo/semantics/article0133042019-05-07info:eu-repo/semantics/openAccess