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Arithmetic growth in partially commutative semigroups of endomorphisms

  • Wade Hindes
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Abstract

We establish asymptotics for the degree and height growth rate functions of partially commutative semigroups of endomorphisms of varieties, i.e., semigroups where the only relations between generators, if any, are commuting ones. To do this, we prove a general result connecting the growth rates of two abstract functions, one multiplicative and one simply nonnegative, subject to a Tate telescoping hypothesis and a sufficiently nice normal form on the underlying semigroup. Finally, we construct several new families of endomorphisms on which our asymptotics apply. To do this, we generalize the standard ping-pong lemma for elements to a ping-pong lemma for subsemigroups.

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Cite

BibTeXRIS
BibTeX
@misc{hindes2026arithmetic,
  title = {{Arithmetic growth in partially commutative semigroups of endomorphisms}},
  author = {Wade Hindes},
  howpublished = {arXiv},
  year = {2026},
  month = oct,
  doi = {10.48550/arxiv.2610.02348},
  eprint = {2610.02348},
  archivePrefix = {arXiv},
  url = {https://arxiv.org/abs/2610.02348},
}
RIS
TY  - UNPB
TI  - Arithmetic growth in partially commutative semigroups of endomorphisms
AU  - Wade Hindes
PY  - 2026
DA  - 2026/10/01
PB  - arXiv
DO  - 10.48550/arxiv.2610.02348
UR  - https://arxiv.org/abs/2610.02348
AB  - We establish asymptotics for the degree and height growth rate functions of partially commutative semigroups of endomorphisms of varieties, i.e., semigroups where the only relations between generators, if any, are commuting ones. To do this, we prove a general result connecting the growth rates of two abstract functions, one multiplicative and one simply nonnegative, subject to a Tate telescoping hypothesis and a sufficiently nice normal form on the underlying semigroup. Finally, we construct several new families of endomorphisms on which our asymptotics apply. To do this, we generalize the standard ping-pong lemma for elements to a ping-pong lemma for subsemigroups.
ER  -