Structural Sign Herdability in Temporally Switching Networks with Fixed Topology
For control theorists and network scientists, this work provides a novel theoretical insight into how temporal switching can overcome structural limitations of herdability in static networks.
This paper shows that temporally switching networks with fixed topology can achieve structural sign herdability even when static networks cannot, requiring only two snapshots. The results reveal a fundamental advantage of temporal dynamics in overcoming classical obstructions.
This paper investigates structural herdability in a special class of temporally switching networks with fixed topology. We show that when the underlying digraph remains unchanged across all snapshots, the network attains complete SS herdability even in the presence of signed or layer dilations, a condition not applicable to static networks. This reveals a fundamental structural advantage of temporal dynamics and highlights a novel mechanism through which switching can overcome classical obstructions to herdability. To validate these conclusions, we utilize a more relaxed form of sign matching within each snapshot of the temporal network. Furthermore, we show that when all snapshots share the same underlying topology, the temporally switching network achieves $\mathcal{SS}$ herdability within just two snapshots, which is fewer than the number required for structural controllability. Several examples are included to demonstrate these results.