Download A Survey of Lower Bounds for Satisfiability and Related by Dieter Melkebeek Van, Dieter Van Melkebeek PDF

By Dieter Melkebeek Van, Dieter Van Melkebeek

NP-completeness arguably varieties the main pervasive thought from desktop technology because it captures the computational complexity of hundreds of thousands of vital difficulties from all branches of technology and engineering. The P as opposed to NP query asks even if those difficulties should be solved in polynomial time. A unfavorable resolution has been greatly conjectured for a very long time yet, until eventually lately, no concrete decrease bounds have been identified on common versions of computation. Satisfiability is the matter of finding out even if a given Boolean formulation has no less than one pleasurable project. it's the first challenge that used to be proven to be NP-complete, and is very likely the main mostly studied NP-complete challenge, either for its theoretical homes and its functions in perform. A Survey of decrease Bounds for Satisfiability and comparable difficulties surveys the lately came across reduce bounds for the time and house complexity of satisfiability and heavily comparable difficulties. It overviews the cutting-edge effects on common deterministic, randomized, and quantum versions of computation, and offers the underlying arguments in a unified framework. A Survey of decrease Bounds for Satisfiability and similar difficulties is a useful reference for professors and scholars doing learn in complexity concept, or planning on doing so.

Show description

Read or Download A Survey of Lower Bounds for Satisfiability and Related Problems PDF

Similar computer science books

A Short Introduction to Quantum Information and Quantum Computation

Quantum info and computation is a quickly increasing and cross-disciplinary topic. This e-book supplies a self-contained creation to the sphere for physicists, mathematicians and laptop scientists who need to know extra approximately this intriguing topic. After a step by step creation to the quantum bit (qubit) and its major homes, the writer provides the required heritage in quantum mechanics.

Storage Management in Data Centers: Understanding, Exploiting, Tuning, and Troubleshooting Veritas Storage Foundation

Garage administration in facts facilities is helping directors take on the complexity of information heart mass garage. It exhibits the best way to make the most the possibility of Veritas garage beginning through conveying information regarding the layout recommendations of the software program in addition to its architectural historical past. instead of purely showing how to use garage beginning, it explains why to use it in a selected approach, besides what is going on inside of.

Exploring Randomness (Discrete Mathematics and Theoretical Computer Science)

This crucial significant other to Chaitin's winning books The Unknowable and the bounds of arithmetic, provides the technical middle of his idea of program-size complexity. the 2 prior volumes are extra concerned about purposes to meta-mathematics. LISP is used to give the most important algorithms and to let computing device clients to have interaction with the authors proofs and detect for themselves how they paintings.

Mindstorms - Children, Computers and Powerful Ideas

Mindstorms has valuable issues: that youngsters can discover ways to use pcs in a masterful approach and that studying to exploit desktops can switch the way in which they research every little thing else. Even open air the school room, Papert had a imaginative and prescient that the pc might be used simply as casually and as individually for a variety of reasons all through a person’s complete lifestyles.

Extra resources for A Survey of Lower Bounds for Satisfiability and Related Problems

Sample text

If Σk T(n) ⊆ XTS(nd , ne ), then for any reals d < d and e < e Σk SAT ∈ XTS(nd , ne ). The same holds if we replace Σk T(n) and Σk SAT by PT(n) and MajSAT, respectively. 2 for k = 1 also exist to all of the standard natural NP-complete problems. In fact, to the best of my knowledge, all known natural NP-complete problems in nondeterministic quasi-linear time share the latter property. 1 holds if we replace satisfiability by any of these problems. From now on, our goal will be to obtain time and space lower bounds for nondeterministic linear time, Σk T(n) with k > 1, and randomized linear time with unbounded error.

Suppose that, for a given tape T , we have the blocks sorted in a stable way on the value of the corresponding index tape in that block. Then we can perform the consistency check for tape T by looking at all pairs of consecutive blocks and verifying that, if they accessed the same cell of T , the contents of that cell in the second block is as dictated by the transition encoded in the first block, and if they accessed different cells, then the contents of the cell in the second block is blank. These conditions can be expressed in the same way as (ii) above.

The latter conditions can be expressed in a similar way as condition (ii) above. The size and constructibility properties of the network guarantee that the resulting Boolean formula is of quasi-linear size and such that each bit can be computed in polylogarithmic time and logarithmic space. The consistency of the input tape accesses with the actual input x can be checked in a similar way as condition (iii). The only difference is that before running the stable sorting for the input tape, we prepend n dummy blocks, the ith of which has the input tape head set to location i.

Download PDF sample

Rated 4.08 of 5 – based on 41 votes