Polynomial Equivalence of Extended Chemical Reaction Models

Fuente: arXiv
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Autores principales: Bajaj, Divya, Castellanos, Jose Luis, Knobel, Ryan, Luchsinger, Austin, Massie, Aiden, Salinas, Adrian, Santos, Pablo, Santos, Ramiro, Schweller, Robert, Wylie, Tim
Formato: Preprint
Publicado: 2025
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author Bajaj, Divya
Castellanos, Jose Luis
Knobel, Ryan
Luchsinger, Austin
Massie, Aiden
Salinas, Adrian
Santos, Pablo
Santos, Ramiro
Schweller, Robert
Wylie, Tim
author_facet Bajaj, Divya
Castellanos, Jose Luis
Knobel, Ryan
Luchsinger, Austin
Massie, Aiden
Salinas, Adrian
Santos, Pablo
Santos, Ramiro
Schweller, Robert
Wylie, Tim
contents The ability to detect whether a species (or dimension) is zero in Chemical Reaction Networks (CRN), Vector Addition Systems, or Petri Nets is known to increase the power of these models -- making them capable of universal computation. While this ability may appear in many forms, such as extending the models to allow transitions to be inhibited, prioritized, or synchronized, we present an extension that directly performs this zero checking. We introduce a new void genesis CRN variant with a simple design that merely increments the count of a specific species when any other species' count goes to zero. As with previous extensions, we show that the model is Turing Universal. We then analyze several other studied CRN variants and show that they are all equivalent through a polynomial simulation with the void genesis model, which does not merely follow from Turing-universality. Thus, inhibitor species, reactions that occur at different rates, being allowed to run reactions in parallel, or even being allowed to continually add more volume to the CRN, does not add additional simulation power beyond simply detecting if a species count becomes zero.
format Preprint
id arxiv_https___arxiv_org_abs_2509_15584
institution arXiv
publishDate 2025
record_format arxiv
spellingShingle Polynomial Equivalence of Extended Chemical Reaction Models
Bajaj, Divya
Castellanos, Jose Luis
Knobel, Ryan
Luchsinger, Austin
Massie, Aiden
Salinas, Adrian
Santos, Pablo
Santos, Ramiro
Schweller, Robert
Wylie, Tim
Molecular Networks
Computational Complexity
The ability to detect whether a species (or dimension) is zero in Chemical Reaction Networks (CRN), Vector Addition Systems, or Petri Nets is known to increase the power of these models -- making them capable of universal computation. While this ability may appear in many forms, such as extending the models to allow transitions to be inhibited, prioritized, or synchronized, we present an extension that directly performs this zero checking. We introduce a new void genesis CRN variant with a simple design that merely increments the count of a specific species when any other species' count goes to zero. As with previous extensions, we show that the model is Turing Universal. We then analyze several other studied CRN variants and show that they are all equivalent through a polynomial simulation with the void genesis model, which does not merely follow from Turing-universality. Thus, inhibitor species, reactions that occur at different rates, being allowed to run reactions in parallel, or even being allowed to continually add more volume to the CRN, does not add additional simulation power beyond simply detecting if a species count becomes zero.
title Polynomial Equivalence of Extended Chemical Reaction Models
topic Molecular Networks
Computational Complexity
url https://arxiv.org/abs/2509.15584