Ayache, Ahmed; Echi, Othman; Khalfallah, Adel Subrings of a power set and clopen topologies. (English) Zbl 1486.13005 J. Algebra Appl. 20, No. 12, Article ID 2150224, 13 p. (2021). Reviewer: Dario Spirito (Padova) MSC: 13A15 13F30 54F65 PDFBibTeX XMLCite \textit{A. Ayache} et al., J. Algebra Appl. 20, No. 12, Article ID 2150224, 13 p. (2021; Zbl 1486.13005) Full Text: DOI
Ayache, Ahmed; Echi, Othman; Naimi, Mongi On Kronecker polynomials. (English) Zbl 1235.11013 Rocky Mt. J. Math. 41, No. 3, 707-725 (2011). Reviewer: Pieter Moree (Bonn) MSC: 11A41 11A51 11C08 PDFBibTeX XMLCite \textit{A. Ayache} et al., Rocky Mt. J. Math. 41, No. 3, 707--725 (2011; Zbl 1235.11013) Full Text: DOI
Ayache, Ahmed; Dobbs, David E.; Echi, Othman On maximal non-ACCP subrings. (English) Zbl 1154.13007 J. Algebra Appl. 6, No. 5, 873-894 (2007). Reviewer: David F. Anderson (Knoxville) MSC: 13B99 13G05 13A15 13C13 13F05 13B21 PDFBibTeX XMLCite \textit{A. Ayache} et al., J. Algebra Appl. 6, No. 5, 873--894 (2007; Zbl 1154.13007) Full Text: DOI
Ayache, Ahmed; Dobbs, David E.; Echi, Othman Universal mapping properties of some pseudovaluation domains and related quasilocal domains. (English) Zbl 1112.13023 Int. J. Math. Math. Sci. 2006, No. 3, 72589, 12 p. (2006). MSC: 13F30 PDFBibTeX XMLCite \textit{A. Ayache} et al., Int. J. Math. Math. Sci. 2006, No. 3, 72589, 12 p. (2006; Zbl 1112.13023) Full Text: DOI EuDML
Ayache, Ahmed; Echi, Othman Valuation and pseudovaluation subrings of an integral domain. (English) Zbl 1105.13028 Commun. Algebra 34, No. 7, 2467-2483 (2006). Reviewer: J. Shapiro (Fairfax) MSC: 13G05 13F30 18A40 18A20 18A32 PDFBibTeX XMLCite \textit{A. Ayache} and \textit{O. Echi}, Commun. Algebra 34, No. 7, 2467--2483 (2006; Zbl 1105.13028) Full Text: DOI
Ayache, Ahmed; Dobbs, David E.; Echi, Othman Reflection of some quasi-local domains. (English) Zbl 1099.13036 J. Algebra Appl. 5, No. 2, 201-213 (2006). Reviewer: Moshe Roitman (Haifa) MSC: 13G05 13F30 18A40 18A20 18A32 PDFBibTeX XMLCite \textit{A. Ayache} et al., J. Algebra Appl. 5, No. 2, 201--213 (2006; Zbl 1099.13036) Full Text: DOI
Ayache, Ahmed; Echi, Othman The envelope of a subcategory in topology and group theory. (English) Zbl 1145.18300 Int. J. Math. Math. Sci. 2005, No. 21, 3387-3404 (2005). MSC: 18B30 20J15 54B30 PDFBibTeX XMLCite \textit{A. Ayache} and \textit{O. Echi}, Int. J. Math. Math. Sci. 2005, No. 21, 3387--3404 (2005; Zbl 1145.18300) Full Text: DOI EuDML
Ayache, Ahmed; Ben Nasr, Mabrouk; Echi, Othman; Jarboui, Noômen Universally catenarian and going-down pairs of rings. (English) Zbl 1085.13503 Math. Z. 238, No. 4, 695-731 (2001). MSC: 13B24 13B02 13C15 13A18 13E99 PDFBibTeX XMLCite \textit{A. Ayache} et al., Math. Z. 238, No. 4, 695--731 (2001; Zbl 1085.13503) Full Text: DOI
Ayache, Ahmed; Cahen, Paul-Jean; Echi, Othman Quasi-Prüfer rings and \(P\)-rings. (Anneaux quasi-prüfériens et \(P\)-anneaux.) (French) Zbl 0856.13015 Boll. Unione Mat. Ital., VII. Ser., B 10, No. 1, 1-24 (1996). Reviewer: N.Sankaran (Bangalore) MSC: 13F05 13B22 13G05 PDFBibTeX XMLCite \textit{A. Ayache} et al., Boll. Unione Mat. Ital., VII. Ser., B 10, No. 1, 1--24 (1996; Zbl 0856.13015)
Ayache, Ahmed; Cahen, Paul-Jean; Echi, Othman Valuative heights and infinite Nagata rings. (English) Zbl 0848.13003 Commun. Algebra 23, No. 5, 1913-1926 (1995). Reviewer: S.K.Khanduja (Chandigarh) MSC: 13A18 13F20 PDFBibTeX XMLCite \textit{A. Ayache} et al., Commun. Algebra 23, No. 5, 1913--1926 (1995; Zbl 0848.13003) Full Text: DOI
Ayache, Ahmed; Cahen, Paul-Jean; Echi, Othman Intersection of product fibers and dimension formula. (Intersection de produits fibres et formule de la dimension.) (French) Zbl 0813.13021 Commun. Algebra 22, No. 9, 3495-3509 (1994). Reviewer: D.F.Anderson (Knoxville) MSC: 13G05 13C15 13C05 PDFBibTeX XMLCite \textit{A. Ayache} et al., Commun. Algebra 22, No. 9, 3495--3509 (1994; Zbl 0813.13021) Full Text: DOI