Sno 
Publications 
Year 
Status 
View 
[1] 
P. Bakhtary and O. Echi, "On Minimal Hamming Compatible Distances," RAIRO Theoretical Informatics and Applications, 2014. Accepted. 
2014 
Accepted 

[2] 
I. AlRasasi, O. E. Echi, and N. Ghanmi, "On the Korselt Set of a Squarefree Composite Number," Mathematical Reports of the Academy of Science Royal Society of Canada, vol. 35, pp. 115, 2013. 
2013 
Published 

[3] 
O. Echi and N. Ghanmi, "The Korselt Set of pq," International Journal of Number Theory, vol. 8, pp. 299309, 2012. 
2012 
Published 

[4] 
O.Echi, "The Categories of Flows of Set and Top," Topology and its Applications, vol. 159, pp. 23572366, 2012. 
2012 
Published 

[5] 
O. Echi and M. Oueld Abdallahi, "On the Spectralification of a Hemispectral Space," Journal of Algebra and its Applications, vol. 10, pp. 687699, 2011. 
2011 
Published 

[6] 
A. Ayache, O. Echi, and M. Naimi, "On Kronecker Polynomials," Rocky Mountain Journal of Mathematics, vol. 41, pp. 707725, 2011. 
2011 
Published 

[7] 
K. Belaid, L. Dridi, and O. Echi, "Submaximal and Door Compactifications," Topology and its Applications, vol. 158, pp. 19691975, 2011. 
2011 
Published 

[8] 
K. Bouallegue, O. Echi, and P. Richard, "Korselt numbers and sets," International Journal of Number Theory, vol. 6, no. 2, pp. 257269, Mar. 2010. 
2010 
Published 

[9] 
O. Echi and S. Lazaar, "Quasihomeomorphisms and Lattice Equivalent Topological Spaces," Applied General Topology, vol. 10, no. 2, pp. 227237, 2009. 
2009 
Published 

[10] 
O. Echi, "The Cardinality of a Sphere relative to an Edit Distance," Applied Mathematical Sciences.(Ruse), vol. 3, pp. 813824, 2009. 
2009 
Published 

[11] 
O. Echi and S. Lazaar, "Reflective subcategories, Tychonoff Spaces and Spectral Spaces," Topology Proceedings, vol. 34, pp. 307319, 2009. 
2009 
Published 

[12] 
O. Echi and S. Lazaar, "Universal Spaces, Tychonoff and Spectral Spaces," Mathematical Proceedings of the Royal Irish Academy, vol. 109A, pp. 3548, 2009. 
2009 
Published 

[13] 
O. Echi and M. Naimi, "Primitive words and Spectral Spaces," New York Journal of Mathematics, vol. 14, pp. 719731, 2008. 
2008 
Published 

[14] 
M. E. Adams, K. Belaid, L. Dridi, and O. Echi, "Submaximal Spaces and Spectral Spaces," Mathematical Proceedings of the Royal Irish Academy, vol. 108A, pp. 137147, 2008. 
2008 
Published 

[15] 
O. Echi, "Sober Spaces and Sober Sets," Missouri Journal of Mathematical Sciences, vol. 20, pp. 6072, 2008. 
2008 
Published 

[16] 
O. Echi, R. Gargouri, and S. Lazaar, "On the Hochster Dual of a Topological space," Topology Proceedings, vol. 32, pp. 153166, 2008. 
2008 
Published 

[17] 
O. Echi, "Networks of Morphisms," Missouri Journal of Mathematical Sciences, vol. 19, no. 2, pp. 93105, 2007. 
2007 
Published 

[18] 
A. Ayache, D. E. Dobbs, and O. Echi, "On Maximal nonaccp Subrings.," Journal of Algebra and its Applications, vol. 6, no. 5, pp. 873894, 2007. 
2007 
Published 

[19] 
O. Echi, "Williams Numbers," Mathematical Reports of the Academy of Science Royal Society of Canada, vol. 29, pp. 4147, 2007. 
2007 
Published 

[20] 
O. Echi, "On $T_D$spaces," Missouri Journal of Mathematical Sciences, vol. 18, no. 1, pp. 5460, 2006. 
2006 
Published 

[21] 
A. Ayache and O. Echi, "Valuation and Pseudovaluation Subrings of an Integral Domain," Communications in Algebra, vol. 34, no. 7, pp. 24672483, 2006. 
2006 
Published 

[22] 
O. Echi, "Binomial Coefficients and Nasir alDin alTusi," Scientific Research and Essay, vol. 1, no. 2, pp. 2832, 2006. 
2006 
Published 

[23] 
A. Ayache, D. E. Dobbs, and O. Echi, "Universal Mapping Properties of some Pseudovaluation Domains and Related Quasilocal Domains," International Journal of Mathematics and Mathematical Sciences, vol. 2006, no. Art. ID 72589, pp. 12 p, 2006. 
2006 
Published 

[24] 
A. Ayache, D. E. Dobbs, and O. Echi, "Reflection of Some Quasilocal Domains," Journal of Algebra and its Applications, vol. 5, no. 2, pp. 201213, 2006. 
2006 
Published 

[25] 
K. Belaid, O. Echi, and R. Gargouri, "Two Classes of Locally Compact Sober Spaces.," International Journal of Mathematics and Mathematical Sciences, vol. 2005, no. 15, pp. 24212427, 2005. 
2005 
Published 

[26] 
A. Ayache and O. Echi, "The Envelope of a Subcategory in Topology and Group Theory," International Journal of Mathematics and Mathematical Sciences, vol. 2005, no. 21, pp. 201213, 2005. 
2005 
Published 

[27] 
O. Echi and M. Ito, "Upspectral Spaces and Aspectral Spaces," Questions and Answers in General Topology, vol. 23, no. 1, pp. 1526, 2005. 
2005 
Published 

[28] 
K. Belaid, O. Echi, and R. Gargouri, "Aspectral Spaces," Topology and its Applications, vol. 138, no. 13, pp. 315322, 2004. 
2004 
Published 

[29] 
O. Echi and R. Gargouri, "An Upspectral Space Need not be Aspectral," New York Journal of Mathematics, vol. 10, pp. 271277, 2004. 
2004 
Published 

[30] 
K. Belaid, O. Echi, and S. Lazaar, "T(Î±,Î²)spaces and the Wallman Compactification," International Journal of Mathematics and Mathematical Sciences, vol. 2004, no. 6568, pp. 37173735, 2004. 
2004 
Published 

[31] 
K. Belaid and O. Echi, "On a Conjecture about Spectral Sets," Topology and its Applications, vol. 139, no. 13, pp. 115, 2004. 
2004 
Published 

[32] 
O. Echi, "Quasihomeomorphisms, Goldspectral Spaces and Jacspectral Spaces," Bollettino della Unione Matematica Italiana, vol. (8) 6, pp. 489507, 2003. 
2003 
Published 

[33] 
O. Echi, "Topological Characterizations of Some Subspaces of a Spectral Space," Questions and Answers in General Topology, vol. 21, no. 2, pp. 109123, 2003. 
2003 
Published 

[34] 
E. Bouacida, O. Echi, G. Picavet, and E. Salhi, "An Extension Theorem for Sober Spaces and the Goldman Topology," International Journal of Mathematics and Mathematical Sciences, vol. 51, pp. 32173239, 2003. 
2003 
Published 

[35] 
O. Echi and N. Jarboui, "On Residually Integrally Closed Domains," Demonstratio Mathematica, vol. 36, no. 3, pp. 543550, 2003. 
2003 
Published 

[36] 
A. Ayache, M. Ben Nasr, O. Echi, and N. Jarboui, "Universally Catenarian and Goingdown Pairs of Rings," Mathematische Zeitschrift, vol. 238, no. 4, pp. 695731, 2001. 
2001 
Published 

[37] 
M. Ben Nasr, O. Echi, L. Izelgue, and N. Jarboui, "Pairs of Domains where all Intermediate Domains are Jaffard," Journal of Pure and Applied Algebra, vol. 145, no. 1, pp. 118, 2000. 
2000 
Published 

[38] 
K. Belaid, B. Cherif, and O. Echi, "Quasispectral Binary Relations and Ordered Disjoint Unions," Journal of Mathematical Sciences (Calcutta), vol. 11, no. 2, pp. 139157, 2000. 
2000 
Published 

[39] 
E. Bouacida, O. Echi, and E. Salhi, "Feuilletages et Topologie Spectrale," Journal of Mathematical Society of Japan, vol. 52, no. 2, pp. 447464, 2000. 
2000 
Published 

[40] 
S. Ameziane, O. Echi, and I. Yengui, "Direct Systems of Localizations of Polynomial Rings," Acta Scientiarum Mathematicarum (Szeged), vol. 66, no. 34, pp. 465476, 2000. 
2000 
Published 

[41] 
O. Echi, "A Topological Characterization of the Goldman Prime Spectrum of a Commutative Ring," Communications in Algebra, vol. 28, no. 5, pp. 23292337, 2000. 
2000 
Published 

[42] 
E. Bouacida, O. Echi, and E. Salhi, "Foliations, Spectral Topology, and Special Morphisms," Lecture Notes in Pure and Applied Mathematics, vol. 205, pp. 111132, 1997. 
1997 
Published 

[43] 
E. Bouacida, O. Echi, and E. Salhi, "Nonfinite Heights," Lecture Notes in Pure and Applied Mathematics, vol. 185, pp. 113130, 1997. 
1997 
Published 

[44] 
K. Belaid, B. Cherif, and O. Echi, "On Spectral Binary Relations," Lecture Notes in Pure and Applied Mathematics, vol. 185, pp. 7988, 1997. 
1997 
Published 

[45] 
E. Bouacida, O. Echi, and E. Salhi, "Topologies Associ\'es \`a une Relation Binaire et Relation Binaire Spectrale," Bollettino della Unione Matematica Italiana, vol. B (7) 10, pp. 417439, 1996. 
1996 
Published 

[46] 
A. Ayache, P. J. Cahen, and O. Echi, "Anneaux Quasipr\"uf\'eriens et $P$anneaux.," Bollettino della Unione Matematica Italiana, vol. B (7) 10, pp. 124, 1996. 
1996 
Published 

[47] 
A. Ayache, P. J. Cahen, and O. Echi, "Valuative Heights and Infinite Nagata Rings," Communications in Algebra, vol. 23, no. 5, pp. 19131926, 1995. 
1995 
Published 

[48] 
O. Echi, "Sur les Hauteurs Valuatives," Bollettino della Unione Matematica Italiana, vol. B(7)9, pp. 281297, 1995. 
1995 
Published 

[49] 
O. Echi, "The altitude formula," Lecture Notes in Pure and Applied Mathematics, no. 153, pp. 99103, 1994. 
1994 
Published 

[50] 
O. Echi, "Transfert de la Notion de $C$anneaux aux Produits Fibr\'es," Portugaliae Mathematica, vol. 51, no. 1, pp. 1323, 1994. 
1994 
Published 

[51] 
A. Ayache, P. J. Cahen, and O. Echi, "Intersection de Produits Fibr\'es et Formule de la Dimension," Communications in Algebra, vol. 22, no. 9, pp. 34953509, 1994. 
1994 
Published 

[52] 
O. Echi, "$C$anneaux, $E$anneaux et Formule de la Dimension," Portugaliae Mathematica, vol. 50, no. 3, pp. 277295, 1993. 
1993 
Published 
