Polynomial-time reducibilities and “almost all” oracle sets

نویسندگان
چکیده

برای دانلود باید عضویت طلایی داشته باشید

برای دانلود متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید

اگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید

منابع مشابه

Strong and Robustly Strong Polynomial Time Reducibilities to Sparse Sets

GavaldB, R. and J.L. BalcBzar, Strong and robustly strong polynomial time reducibilities to sparse sets, Theoretical Computer Science 88 (1991) I-14. Reducibility defined by oracle strong nondeterministic machines is studied. Two definitions of relativized strength are presented and separated. The corresponding reduction classes of the sparse sets give two nonuniform analogs of the class NPncoN...

متن کامل

Proofs, Codes, and Polynomial-Time Reducibilities

We show how to construct proof systems for NP languages where a deterministic polynomial-time veriier can check membership, given any N (2=3)+ bits of an N-bit witness of membership. We also provide a slightly super-polynomial time proof system where the veriier can check membership, given only N (1=2)+ bits of an N-bit witness. In addition, we construct proof systems where a deterministic poly...

متن کامل

A Comparison of Polynomial Time Reducibilities

&tract. Various forms of polynomial time reducibilig:y zwe compared. Among the forms examined we many-one, bounded truth table, truth 1:able and Turing reducibi!&y. The effect of introducing nondeterminism into red " ,ztiGn procedures is also examined. Computation bounded reducibilities play a role in t theory of' ssralputationa~ complexity which is analogous to, and perhaps as important as, th...

متن کامل

When almost all sets are difference dominated

We investigate the relationship between the sizes of the sum and difference sets attached to a subset of {0, 1, ..., N}, chosen randomly according to a binomial model with parameter p(N), with N = o(p(N)). We show that the random subset is almost surely difference dominated, as N → ∞, for any choice of p(N) tending to zero, thus confirming a conjecture of Martin and O’Bryant. Furthermore, we ex...

متن کامل

Polynomial Running Times for Polynomial-Time Oracle Machines

This paper introduces a more restrictive notion of feasibility of functionals on Baire space than the established one from second-order complexity theory. Thereby making it possible to consider functions on the natural numbers as running times of oracle Turing machines and avoiding secondorder polynomials, which are notoriously difficult to handle. Furthermore, all machines that witness this st...

متن کامل

ذخیره در منابع من


  با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید

ژورنال

عنوان ژورنال: Theoretical Computer Science

سال: 1991

ISSN: 0304-3975

DOI: 10.1016/0304-3975(91)90314-r