Hopfian additive groups of rings
A group is called Hopfian if it is not isomorphic to any of its proper factor groups, or, equivalently, any of its epimorphisms on itself is an isomorphism, i.e., an automorphism. This property was first proved by the Swiss mathematician H. Hopf for fundamental groups of Riemann surfaces....
| मुख्य लेखक: | |
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| स्वरूप: | लेख |
| भाषा: | English |
| प्रकाशित: |
Saratov State University
2025-02-01
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| श्रृंखला: | Известия Саратовского университета. Новая серия. Серия Математика. Механика. Информатика |
| विषय: | |
| ऑनलाइन पहुंच: | https://mmi.sgu.ru/sites/mmi.sgu.ru/files/text-pdf/2025/02/15-23kaigarodov.pdf |