Existence theorems for weakly symmetric operations
نویسندگان
چکیده
منابع مشابه
Existence theorems for weakly symmetric operations
A k-ary weak near-unanimity operation (or k-WNU) on A is an operation that satisfies the equations w(x, . . . , x) ≈ x and w(y, x, . . . , x) ≈ w(x, y, . . . , x) ≈ · · · ≈ w(x, x, . . . , x, y) . If an algebra A has a k-NU (or a k-WNU) term operation, we say that A satisfies NU(k) (or WNU(k), respectively). Likewise, a variety is said to satisfy NU(k) (or WNU(k), respectively), it it has a k-v...
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ژورنال
عنوان ژورنال: Algebra universalis
سال: 2008
ISSN: 0002-5240,1420-8911
DOI: 10.1007/s00012-008-2122-9