High-contrast homogenization: Entry.Annealed.TransportMeans #
Imported from the Apache-2.0 HighContrastHomogenization development at commit
7a13dbcd8d6609264a713373f5c69ceeac870472.
Mean comparison for the two-grid transport #
This module proves the mean comparison of p.two.grid.transport on the rounded grid: the
boundary mean-row weight sums that concentrate the coarse-block weight on the deepest scale,
the Whitney mean bound that decomposes the mean penalty into its bulk, boundary and fine-tail
parts, and the geometric-series, generation-fiber and weighted power-sum estimates that keep
the two decay powers of the fine amplitude separate. It also records the parent-center shift
identifying a child fluctuation with a translated one and the weighted history bound for its
moment.
The cap has mass at most one; only the smaller rows use the boundary mass estimate. Weakening 3^(r−j) preserves the printed (1−γ)-decay.
p.two.grid.transport, expanded to include its actual premises and derivation. Cfine and Cw
are the law-independent source and Whitney
constants. The fine amplitude B is geometric; its two decay powers remain
separate. Total mass, boundary row mass and the fine-tail hypotheses are exactly
the corresponding outputs of the Whitney and source constructions.
The profile pays for each of its three nonnegative components. Its first component pays for the fluctuation history while retaining the mean history.
Reverse integer geometric weights are bounded uniformly in both endpoints, including an empty interval. The denominator is recorded with its positivity.
The actual bulk generation map charges each old summand at most twice. This remains valid when either finite range is empty.
Weighted convexity uses a bound on total weight, without charging the number of summands. The missing weight is placed at zero.
The weighted power estimate for integrable random moments, including empty generation ranges. Positivity and finite moments are explicit guards.
Interchanging the finite target/source sums costs only one geometric mass, even when the generation ranges depend on the target generation.
Any selected target family has the actual aligned target-count bound.
An actual maximal cell center lies in its target and in the old lattice.
Two nonnegative random families can be combined under the same joint maximum, paying only the fixed power constant.
A union of target families is paid by the sum of their moments. Either subfamily may be empty; no generation-count factor is introduced.
An equal-volume row is its relative mass times its unweighted average.
The averaging estimate is instantiated at the actual lattice row (N,j,Z,R). The standing unit-range law is consumed here. The empty row has zero norm.
Count times equal cell volume gives the square-sum coefficient, with no nonempty-row assumption. Exponents b=d ell or b=(d-1)(j-r) give both rows.
The old-history factor uses the trace penalty at scale k, with the d/Q loss from counting the old parents.
The boundary history convolution before choosing the branch j≥k or j<k.
For j<k the boundary history coefficient has 3^(rho(k-j)) growth. The same bound applies to the first branch since rho<1.
Subtracting a scale-k parent center leaves an aligned scale-r center. The child center then lies in the untranslated parent used by the history.
One parent translation works simultaneously for every child generation; this pointwise equality therefore survives the joint maximum.
The history's actual center set is a finite nonempty image of an aligned integer box. This supplies the boundedness needed when using its real suprema.
A chosen child moment is bounded by the single joint history integrand. No sum over source generations is introduced.