sim10 — L2 Composition: Does the Crossing Compose?

Two curvature-channel structures in adjacent regions of one grid. Do they coexist (L2), merge, dominate, or fragment?

Condition: Step: 0

Material field (left | right regions)

Curvature field

Per-region independent components (L2 criterion)

Per-region material

Summary

Condition	L2 crossed	Outcome	Stable	L retain	R retain	Mean L comp	Mean R comp	Cells

The vertical blue line marks the midline. A component crossing it is a single merged structure — counted in neither region. L2 coexistence requires an independent component in EACH region.