منابع مشابه
On Varieties of Groups without Positive Laws
We give negative answers to three questions concerning positive laws and ApA varieties. Let A denote the variety of all abelian groups and Ap — the variety of all abelian groups of exponent p. By F we denote a free group and by V — a verbal subgroup in F . We write G ⊇ F to say that G contains a free nonabelian subsemigroup. A variety generated by G is denoted by var(G). A law u(x1, ..., xn) = ...
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ژورنال
عنوان ژورنال: Bulletin of the Australian Mathematical Society
سال: 1972
ISSN: 0004-9727,1755-1633
DOI: 10.1017/s0004972700045287