Computability of Agentic Systems

Fuente: arXiv
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Autore principale: Viriyasuthee, Chatavut
Natura: Preprint
Pubblicazione: 2026
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author Viriyasuthee, Chatavut
author_facet Viriyasuthee, Chatavut
contents This paper introduces the Quest Graph, a formal framework for analyzing the capabilities of agentic systems with finite context. We define abstractions that model common reasoning techniques and establish their computational power: the base Quest Graph is equivalent to an unrestricted Turing machine; the forward-only Finite Quest Decision Process (FQDP), despite its wide use, is only equivalent to a pushdown automaton (context-free); and the Reference-Augmented QDP (RQDP) regains Turing completeness only when stateful queries are allowed. Since computability affects efficiency, we then analyze the theoretical efficiency of each model by simulating task dependencies in computation graphs. We show that this computational hierarchy translates to concrete performance trade-offs: reference-augmented (Turing-complete) systems can be exponentially more efficient at simulating complex graphs than their non-augmented (context-free) counterparts. This work provides a formal methodology for classifying and understanding the fundamental capabilities of agentic systems.
format Preprint
id arxiv_https___arxiv_org_abs_2602_13222
institution arXiv
publishDate 2026
record_format arxiv
spellingShingle Computability of Agentic Systems
Viriyasuthee, Chatavut
Computational Complexity
Artificial Intelligence
Formal Languages and Automata Theory
This paper introduces the Quest Graph, a formal framework for analyzing the capabilities of agentic systems with finite context. We define abstractions that model common reasoning techniques and establish their computational power: the base Quest Graph is equivalent to an unrestricted Turing machine; the forward-only Finite Quest Decision Process (FQDP), despite its wide use, is only equivalent to a pushdown automaton (context-free); and the Reference-Augmented QDP (RQDP) regains Turing completeness only when stateful queries are allowed. Since computability affects efficiency, we then analyze the theoretical efficiency of each model by simulating task dependencies in computation graphs. We show that this computational hierarchy translates to concrete performance trade-offs: reference-augmented (Turing-complete) systems can be exponentially more efficient at simulating complex graphs than their non-augmented (context-free) counterparts. This work provides a formal methodology for classifying and understanding the fundamental capabilities of agentic systems.
title Computability of Agentic Systems
topic Computational Complexity
Artificial Intelligence
Formal Languages and Automata Theory
url https://arxiv.org/abs/2602.13222