SearcharxivSearch

arXiv · 2312.14194

The Problem of Computational Complexity

Abstract

This article presents a general solution to the problem of computational complexity. First, it gives a historical introduction to the problem since the revival of the foundational problems of mathematics at the end of the 19th century. Second, building on the theory of functional relations in mathematics, it provides a theoretical framework where we can rigorously distinguish two pairs of concepts: Between solving a problem and verifying the solution to a problem. Between a deterministic and a non-deterministic model of computation. Third, it presents the theory of computational complexity and the difficulties in solving the P versus NP problem. Finally, it gives a complete proof that a certain decision problem in NP has an algorithmic exponential lower bound thus establishing firmly that P is different from NP. The proof presents a new way of approaching the subject: neither by entering into the unmanageable difficulties of proving this type of lower bound for the known NP-complete problems nor by entering into the difficulties regarding the properties of the many complexity classes established since the mid-1970s.

Explore related subjects

Keep this discovery

BibTeXRIS

Rami Zaidan. 2023-12-20. The Problem of Computational Complexity. https://arxiv.org/abs/2312.14194

Cite the original work for its findings. Save a collection to share your selection of sources.

KEEP EXPLORING

Related papers

The Computational Complexity of Holant Problems on 4-regular Graphs from the Stable Subgroup Sequence of $SL(2,\mathbb{C})$

The Holant framework provides a general setting for studying counting problems and includes graph homomorphisms (\#GH) and counting constraint satisfaction problems (\#CSP) as special cases. Over the past twenty years, a series of computational complexity dichotomies have been established for Holant problems, but the classification for complex-valued signatures is still open. The main obstacle is the case in which all signatures have even arity. In this paper, we establish a dichotomy for Holant problems with a complex-valued 4-ary signature, which is a key base case for the full classification of Holant problems. We present a new strategy by introducing Schur's theorem, the classification of finite subgroups of $\mathrm{SL}(2,\mathbb{C})$ and stable subgroup sequences into the proof. These new techniques are of independent interest.

cs.CC

Topology inside NC$^1$

We show that ACC$^0$ is precisely what can be computed with constant-width circuits of polynomial size and polylogarithmic genus. This extends a characterization given by Hansen, showing that planar constant-width circuits also characterize ACC$^0$. Thus polylogarithmic genus provides no additional computational power in this model. We consider other generalizations of planarity, including crossing number and thickness. We show that constant-width circuits of polynomial size and thickness two already suffice to capture all of NC$^1$.

cs.CC