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Mathematics of Herding

  • Sayomi Kamimoto
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Abstract

A herd of animals often follows a leader who sets the direction of travel. The leader sometimes turns unexpectedly and the followers reshuffle. Yet the herd regroups itself and stays coherent. Our work aims to understand the herding behavior mathematically. We construct a minimal discrete-time nonequilibrium dynamical system with one-way coupling, and the minimal structure allows an exact analysis. Take the location of each follower in the frame of the leader. The recorded locations form a distribution. The limit of the distribution is the asymptotic spatial measure, whose geometric representation we study. The dynamics of the herd have an exact operator representation with two factors, the operator of a fixed leader-follower pair and the operator of the interaction rules, which reshuffle the pairs. We show that the influence of the leader passes through some follower more than once. As a result, two followers can have reciprocal influence, despite the one-way coupling.

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Cite

BibTeXRIS
BibTeX
@misc{kamimoto2026mathematics,
  title = {{Mathematics of Herding}},
  author = {Sayomi Kamimoto},
  howpublished = {arXiv},
  year = {2026},
  month = oct,
  doi = {10.48550/arxiv.2610.23992},
  eprint = {2610.23992},
  archivePrefix = {arXiv},
  url = {https://arxiv.org/abs/2610.23992},
}
RIS
TY  - UNPB
TI  - Mathematics of Herding
AU  - Sayomi Kamimoto
PY  - 2026
DA  - 2026/10/14
PB  - arXiv
DO  - 10.48550/arxiv.2610.23992
UR  - https://arxiv.org/abs/2610.23992
AB  - A herd of animals often follows a leader who sets the direction of travel. The leader sometimes turns unexpectedly and the followers reshuffle. Yet the herd regroups itself and stays coherent. Our work aims to understand the herding behavior mathematically. We construct a minimal discrete-time nonequilibrium dynamical system with one-way coupling, and the minimal structure allows an exact analysis. Take the location of each follower in the frame of the leader. The recorded locations form a distribution. The limit of the distribution is the asymptotic spatial measure, whose geometric representation we study. The dynamics of the herd have an exact operator representation with two factors, the operator of a fixed leader-follower pair and the operator of the interaction rules, which reshuffle the pairs. We show that the influence of the leader passes through some follower more than once. As a result, two followers can have reciprocal influence, despite the one-way coupling.
ER  -