A new algebraic approach to the graph isomorphism and clique problems

05/14/2019
by   Roman Galay, et al.
0

As it follows from Gödel's incompleteness theorems, any consistent formal system of axioms and rules of inference should imply a true unprovable statement. Actually this fundamental principle can be efficiently applicable in Computational Mathematics and Complexity Theory concerning the computational complexity of problems from the class NP, particularly and especially the NP-complete ones. While there is a wide set of algorithms for these problems that we call heuristic, the correctness or/and complexity of each concrete algorithm (or the probability of its correct and polynomial-time work) on a class of instances is often too difficult to determine, although we may also assume the existence of a variety of algorithms for NP-complete problems that are both correct and polynomial-time on all the instances from a given class (where the given problem remains NP-complete), but whose correctness or/and polynomial-time complexity on the class is impossible to prove as an example for Gödel's theorems. However, supposedly such algorithms should possess a certain complicatedness of processing the input data and treat it in a certain algebraically "entangled" manner. The same algorithmic analysis in fact concerns all the other significant problems and subclasses of NP, such as the graph isomorphism problem and its associated complexity class GI. The following short article offers a couple of algebraically entangled polynomial-time algorithms for the graph isomorphism and clique problems whose correctness is yet to be determined either empirically or through attempting to find proofs.

READ FULL TEXT

page 1

page 2

page 3

page 4

research
05/21/2023

The airplane refueling problem is NP-complete and is solvable in polynomial time

The airplane refueling problem is a nonlinear combinatorial optimization...
research
12/22/2022

A Graph-Transformational Approach for Proving the Correctness of Reductions between NP-Problems

The complexity class NP of decision problems that can be solved nondeter...
research
07/26/2017

Composition problems for braids: Membership, Identity and Freeness

In this paper we investigate the decidability and complexity of problems...
research
03/15/2021

Pseudodeterministic Algorithms and the Structure of Probabilistic Time

We connect the study of pseudodeterministic algorithms to two major open...
research
12/19/2019

On the hardness of finding normal surfaces

There are fundamental topological problems, such as unknot recognition a...
research
02/13/2021

Deciding Polynomial Termination Complexity for VASS Programs

We show that for every fixed k≥ 3, the problem whether the termination/c...
research
06/15/2023

Functional Dependencies with Predicates: What Makes the g_3-error Easy to Compute?

The notion of functional dependencies (FDs) can be used by data scientis...

Please sign up or login with your details

Forgot password? Click here to reset