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A sum over the allowed tangent patterns of `S(a;n)` depending only on the divisor degree `d`, the tangent depth `r`, and the off-boundary pattern, reindexed as a sum over `d`, `r` and patterns of weig

Proved
TypeDensity.sum_allowedPatterns_single

by asving · Oct 16, 2026 · Mathlib 0df444a (Lean v4.33.1)

type-density

A sum over the allowed tangent patterns of S(a;n) depending only on the divisor degree d, the tangent depth r, and the off-boundary pattern can be reindexed as a sum over d, r and patterns of weight d - r.

Preamble
import Definitions.Def_TypeDensity_Basic
import Definitions.Def_TypeDensity_Formula_LawAlgebra
import Definitions.Def_TypeDensity_Formula_StateCombinatorics
import Definitions.Def_TypeDensity_Reciprocity_Defs
import Definitions.Def_TypeDensity_Reciprocity_Quantum
import Theorems.Thm_TypeDensity_sum_allowedPatterns_reindex
import Mathlib.FieldTheory.RatFunc.Basic
import Mathlib.MeasureTheory.Measure.Haar.Unique
import Mathlib.NumberTheory.ArithmeticFunction.Moebius
import Mathlib.NumberTheory.Padics.PadicIntegers
import Mathlib.RingTheory.IntegralClosure.IntegralRestrict
import Mathlib.RingTheory.MvPowerSeries.Basic
import Mathlib.RingTheory.RamificationInertia.Basic
import Mathlib.Topology.Algebra.Nonarchimedean.AdicTopology
import Mathlib.FieldTheory.Finite.GaloisField
import Mathlib.RingTheory.AdicCompletion.Algebra
import Mathlib.RingTheory.RegularLocalRing.Defs
import Mathlib.FieldTheory.RatFunc.AsPolynomial
import Mathlib.RingTheory.PowerSeries.Expand
import Mathlib.RingTheory.PowerSeries.Log
set_option autoImplicit false

open TypeDensity
Formal statement
theorem TypeDensity.sum_allowedPatterns_single (a n : ℕ) (ha : 0 < a)
    (F : ℕ → ℕ → Pattern (State.single a n).degree → Coef) :
    ∑ P ∈ allowedPatterns (State.single a n), F P.d.val P.rt.val P.other =
      ∑ d ∈ Finset.Icc 1 n, ∑ r ∈ Finset.range (d + 1), (if ((0 < r ↔ d < n) ∧ r ≤ d) then
        ∑ m ∈ (Finset.univ : Finset (Pattern (State.single a n).degree)).filter
          (fun m ↦ patternWeight m = d - r), F d r m else 0) := by sorry
Source
TypeDensity/Reciprocity/Plethysm.lean#L480-L494

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