References
- Abhyankar , S. , Eakin , P. and Heinzer , W. 1972 . On the uniqueness of the coefficient ring in a polynomial ring . J. Alg , 23 : 310 – 362 .
- Anderson , F.W. and Fuller , K.R. 1973 . Rings & categories of modules , Vol. 13 , Springer-Verlag . Graduate Texts in Math
- Brewer , J.W. and Rutter , E.A. 1972 . Isomorphic polynomial rings . Archiv der Mathematik , 23 : 484 – 488 .
- Coleman , D.B. and Enochs , E.E. 1971 . Isomorphic polynomial rings . Proc. AMS , 27 : 247 – 252 .
- Deo , S. and Varadarajan , K. 1994 . Hopfian & co-hopflan zero dimensional spaces . J. Ramanujan Math. Soc , 9 : 177 – 202 .
- Deo S. Sankaran P. Varadarajan K. Some finiteness properties of groups and their automorphism groups submitted
- Dischinger , F. 1976 . Sur les anneaux fortement π-reguliers . Acad, C.R. Paris, Ser A , 283 : 571 – 573 .
- Dischinger , F. 1977 . “ Stark π-regular Ringe ” . In Dissertation , Munchen : Ludwig-Maximilians-Universitat .
- Eakin , P. and Kubota , K.K. 1972 . A note on the uniqueness of rings of coefficients in polynomial rings . Proc. AMS , 32 : 333 – 341 .
- Gillman , L. and Jerison , M. 1976 . Rings of continuous functions , New York : Springer-Verlag .
- Goodearl , K.R. 1979 . Von Neumann regular rings , Vol. 4 , Pitman Publishing Limited . Monographs and studies in Mathematics
- Hochster , M. 1972 . Non uniqueness of coefficient rings in a polynomial ring . Proc. AMS , 34 : 81 – 82 .
- Nicholson , W.K. 1977 . Lifting idempotents and exchange rings . Trans. AMS , 229 : 269 – 278 .
- Stock , Josef . 1986 . On rings whose projective modules have the exchange property . J. Alg , 103 : 437 – 453 .
- Tripathi S.D. On the hopficity of the polynomial rings Proc. Indian Academy of Sciences To appear
- Varadarajan , K. 1992 . Hopfian and co-hopfian objects . Publicacions Matematiques , 36 : 293 – 317 .
- Varadarajan K. On hopfian rings Acta Math. Hungarica To appear
- Vasconcelos , W. 1970 . Injective endomorphisms of finitely generated modules . Proc. AMS , 25 : 900 – 901 .
- Walker , R.C. 1974 . “ Stone-Čech compactification ” . In Ergebnisse der Math , Vol. 83 , Springer-Verlag .