Definitions

The storm. From the first record to the lock: the census grows exponentially and propagation is unconstrained.

The lock. The completion of the assembly: all twenty-one ropes taut, c engaged, the constants steady thereafter.

The tail. The room’s growth after the lock, answering the hold as the census thins — the two known eras.

The beat, two ways. H_ε,∞, the leak’s own constant fractional rate in the settled limit, AP46’s stance; H_ε(t₀), the leak’s effective rate today under the balance. In the settled limit they coincide at 0.792 of the cycle’s inverse; while the hold still settles today’s value may sit above the settled one by the tail, D48’s.

The census. Everything written and persisting. A held record — a three-dimensional coupling with mass, the rock. A running reading — the line, light.

The balance. The 1:1 between the room’s stretch and the census’s hold at every instant, the cost always paid: stretch² = k·G·ρ + H_ε². The Friedmann equation, §5.

A thinning count. How many dimensions of the room’s growth a kind of census pays as the room grows: three for a held record, four for a running reading.

The window. One lane-time either side of the cycle, AP46’s width, carried into the rate.

Symbols. ε the break, the grain. α the fine-structure constant, ≈ 1/137.036. τ_C the tick, ħ/(mₑc²) ≈ 1.29 × 10⁻²¹ s; a click, the author’s word for it — and, in his image of the eye, his word for a lane; the two senses are marked where they occur. The cycle, (21/18)·α⁻¹⁸·τ_C = 13.830 Gyr; the lane, one twenty-first of it, 0.659 Gyr. N the census; ρ its density; a the room’s size; H its fractional growth rate, the stretch; k the count in front of G, 8π/3. H₀t₀ the pure number the equation gives for rate times age at a given partition. The eighteen and the three, AP28’s face-projections and gates. The horse, propagation; the handler, the arena; the ropes, the constraint; taut, c engaged; a knot, one tick of resistance on the rope. AP18’s correction factor 2 ln(sec ½ + tan ½) ≈ 1.0445, written α in AP18 and not the fine-structure constant.