dorsal/arxiv
View SchemaRewriting Systems on Arbitrary Monoids
| Authors | Eduardo Magalhães |
|---|---|
| Categories | |
| ArXiv ID | 2601.10564vv1 |
| URL | https://arxiv.org/abs/2601.10564 |
| License | http://creativecommons.org/licenses/by/4.0/ |
Abstract
In this paper, we introduce monoidal rewriting systems (MRS), an abstraction of string rewriting in which reductions are defined over an arbitrary ambient monoid rather than a free monoid of words. This shift is partly motivated by logic: the class of free monoids is not first-order axiomatizable, so "working in the free setting" cannot be treated internally when applying first-order methods to rewriting presentations. To analyze these systems categorically, we define $\mathbf{NCRS_2}$ as the 2-category of Noetherian Confluent MRS. We then prove the existence of a canonical biadjunction between $\mathbf{NCRS_2}$ and $\mathbf{Mon}$. Finally, we classify all Noetherian Confluent MRS that present a given fixed monoid. For this, we introduce Generalized Elementary Tietze Transformations (GETTs) and prove that any two presentations of a monoid are connected by a (possibly infinite) sequence of these transformations, yielding a complete characterization of generating systems up to GETT-equivalence.
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"abstract": "In this paper, we introduce monoidal rewriting systems (MRS), an abstraction of string rewriting in which reductions are defined over an arbitrary ambient monoid rather than a free monoid of words. This shift is partly motivated by logic: the class of free monoids is not first-order axiomatizable, so \"working in the free setting\" cannot be treated internally when applying first-order methods to rewriting presentations.\n To analyze these systems categorically, we define $\\mathbf{NCRS_2}$ as the 2-category of Noetherian Confluent MRS. We then prove the existence of a canonical biadjunction between $\\mathbf{NCRS_2}$ and $\\mathbf{Mon}$.\n Finally, we classify all Noetherian Confluent MRS that present a given fixed monoid. For this, we introduce Generalized Elementary Tietze Transformations (GETTs) and prove that any two presentations of a monoid are connected by a (possibly infinite) sequence of these transformations, yielding a complete characterization of generating systems up to GETT-equivalence.",
"arxiv_id": "2601.10564",
"authors": [
"Eduardo Magalh\u00e3es"
],
"categories": [
"cs.FL",
"cs.LO",
"math.CT"
],
"license": "http://creativecommons.org/licenses/by/4.0/",
"title": "Rewriting Systems on Arbitrary Monoids",
"url": "https://arxiv.org/abs/2601.10564",
"version": "v1"
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