Imports
import CLRSLean.FourthEdition.Chapter_26.Section_26_2_4_Algorithms.ParallelMerge.Costs.Span.Envelope
import CLRSLean.FourthEdition.Chapter_26.Section_26_2_4_Algorithms.ParallelMerge.Costs.Span.Bounds
import CLRSLean.FourthEdition.Chapter_26.Section_26_2_4_Algorithms.ParallelMerge.Costs.Span.WitnessLists
import CLRSLean.FourthEdition.Chapter_26.Section_26_2_4_Algorithms.ParallelMerge.Costs.Span.LowerBoundCLRS Chapter 26.3 — P-MERGE Span
This navigation module collects the three-quarter envelope, its pointwise quadratic-logarithmic upper bound, and the matching interleaved lower witness.