Entangled Fraction

The Entangled Fraction is the share of voxels in a quantum computational substrate that take part in entanglement networks, set at about one tenth. It expresses a trade-off: entanglement provides quantum correlations, drawn from the shared loop rather than sent across space, that support distributed recursive processing, but each entangled link adds decoherence overhead. The book fixes the fraction at the value it takes to balance enhanced computational capability against stability. With 10⁶ voxels, this fraction gives the Entangled Pairs Count of 5 × 10⁴ pairs, the backbone of the Entanglement Overlay Networks. The formal statement is f⧟ = 0.1 ± 0.01, where f⧟ is the fraction of voxels participating in entanglement networks, 0.1 the nominal value and 0.01 the uncertainty. All quantities are dimensionless [∅]; the book's check is consistent. It connects to the Entangled Pairs Count, Entanglement Overlay Networks, Voxel Lattice Structure and Fault-Tolerant Quantum Computation.