A note on some chain conditions |
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Authors: | Noômen Jarboui |
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Institution: | (1) Department of Mathematics, Faculty of Sciences of Sfax, 3018 Sfax, P.O.Box: 802, Tunisia, Africa |
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Abstract: | We answer a question raised by Othman Echi: Is an E
1 (resp., a C
1) ring an E (resp., a C) ring? We construct a C
1 (thus E
1) ring which is not an E
2 (thus not a C
2) ring.
Received: 11 June 2007 |
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Keywords: | Primary 13B02 Secondary 13C15 13A17 13A18 13B25 13E05 |
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