Guitart, R.; Lair, C. Limites et co-limites pour représenter les formules. (French) Zbl 0535.03013 Diagrammes 7, Exp. No. 4, 24 p. (1982). The authors prove that several groupoids which naturally arise in classical model theory are ”sketchable” (”esquissable”) in the sense of C. Ehresmann [Bul. Inst. Politeh. Iaşi, Nouv. Sér. 14(18), No.1/2, 1-14 (1968; Zbl 0196.031)]. Reviewer: P.Bankston Cited in 9 Documents MSC: 03C68 Other classical first-order model theory 18B40 Groupoids, semigroupoids, semigroups, groups (viewed as categories) Keywords:sketchable groupoids; first order theories; limits; co-limits Citations:Zbl 0196.031 PDFBibTeX XML Full Text: EuDML