Unambiguous computation boolean hierarchies and sparse turing-complete sets.

It is known that for any class C closed under union and intersection, the Boolean closure of C, the Boolean hierarchy over C and the symmetric difference hierarchy over C all are equal. We prove that these equalities hold for any complexity class closed under intersection; in particular, they thus h...

وصف كامل

التفاصيل البيبلوغرافية
الحاوية / القاعدة:SIAM journal on computing. 26, 3 (1997).
المؤلف الرئيسي: Hemaspaandra, Lane A.
التنسيق: مقال
اللغة:English
الموضوعات: