Validity of coordinate square mask smallPairMask_1_2_21

Proved

D1Bound5.smallPairMask_1_2_21_valid

by tp · Oct 24, 2026 · Mathlib 0df444a (Lean v4.33.1)

diophantine-tuplesnumber-theory

The mask smallPairMask_1_2_21 accepts every square modulo 79 in the quadratic coordinate algebra with relation ω² = τω − ν, where τ = 1 and ν = 2. This includes the zero square.

Preamble

import Mathlib.Algebra.QuadraticAlgebra.Basic
import Mathlib.Data.Int.Sqrt
import Mathlib.Data.ZMod.Basic
import Mathlib.Tactic.Linarith
import Definitions.Def_D1Bound5_FastSquareTest_Definitions
import Definitions.Def_D1Bound5_SmallPairSieve_1_2_Definitions

Formal statement

section
namespace D1Bound5
set_option maxRecDepth 100000
set_option maxHeartbeats 0

































































theorem _root_.D1Bound5.smallPairMask_1_2_21_valid : CoordinateSquareMaskValid 1 2 78 smallPairMask_1_2_21 := by sorry














end D1Bound5
end

Source

D1Bound5/SmallPairSieve_1_2.lean, lines 113-115, SHA-256 0e06eb108afce10f63dd87b8402973d477820e1a7d76cfa29f8e0be3d77d5235. Project: https://github.com/tomislav-math/d1-bound5-lean

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