Ring varieties closed under ideal sums

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Ring varieties closed under ideal sums. (English). Commentationes Mathematicae Universitatis Carolinae, vol. 18 (1977), issue 3, pp. 569-578

MSC: 08A15, 08B99, 16A38, 16Rxx | MR 0485628 | Zbl 0382.08007

References:

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[2] B. J. GARDNER: Extension-closed varieties of rings need not have attainable identities. submitted. MR 0545800 | Zbl 0393.17002

[3] B. J. GARDNER P. N. STEWART: On semi-simple radical classes. Bull. Austral. Math. Soc. 13 (1975), 349-353. MR 0396643

[4] O. GOLDMAN: Hilbert rings and the Hilbert Nullstellensatz. Math. Z. 54 (1951), 136-140. MR 0044510 | Zbl 0042.26401

[5] I. N. HERSTEIN: Noncommutative rings. Carus Monograph No. 15, Mathematical Association of America, (1968). MR 1449137 | Zbl 0177.05801

[6] J. M. OSBORN: Varieties of algebras. Advances in Math. 8 (1972), 163-169. MR 0289587 | Zbl 0232.17001

[7] T. S. SHORES: A note on products of normal subgroups. Canad. Math. Bull. 12 (1969), 21-24. MR 0244360 | Zbl 0177.03502

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