Eliminated Image-Wall Closures and Corner Collapse in Endpoint-Compression Words

This note determines the eliminated image-side closures of principal walls for endpoint-compression words on the ALA_LAL-chart. It proves that the full image is dense, the determinant and endpoint walls eliminate to $uv=w$ and $u=1$, and the GM15 corner components collapse to the same image-side line $u=1,w=v$.