PF0009

pythagorean_euclidean_from_order

Alpha v34 independently verified · alpha_closed; checked-use authorized; not Stable

Every ordered pair of natural Euclidean parameters constructs a witnessed Pythagorean triple without subtraction or a supplied square-difference hypothesis.

Current library: Alpha v34, 4,223 checked-use theorems; Stable remains 432. Historical first admissions, original proof editions, and non-admitted aliases are preserved. Exact original first-admission records.

Exact expanded first-order arithmetic statement

forall m n. (exists gap. gap + n = m) -> exists d. ((d) * (d) + (2 * (m * n)) * (2 * (m * n)) = (m * m + n * n) * (m * m + n * n))

Constructive proof overview

Generated structural guide

Every ordered pair of natural Euclidean parameters constructs a witnessed Pythagorean triple without subtraction or a supplied square-difference hypothesis.

The unchanged tactic script uses 2 declared prerequisites and contains 6 exact native proof lines.

dependency-curried kernel-checked theorem body; Alpha enrollment and checked-use authority follow separately sealed release evidence; Stable membership remains unchanged

Proof neighborhood

Direct dependencies

Direct dependents

none

Formal native tactic body

Dependencies are introduced as named hypotheses before line 1. Local theorem links identify exact declared prerequisites. This exact body belongs to a complete independently kernel-checked constructive proof bundle and has Alpha checked-use authority; it does not imply Stable membership.

Read the argument

Proof checkpoints

6 script commands · 2 reading checkpoints · 0 local claims

This is a reading aid, not a new proof or a proof-tree certificate. Checkpoint groups are consecutive commands, not inferred branch boundaries. Every step links to the preserved script.

Named ingredients (2)
01Fix variables and assumptionsL1–3

Work with arbitrary variables or the premises of the current implication.

  1. L1
    intro m
  2. L2
    intro n
  3. L3
    intro hbound
02Use earlier factsL4–6

Instantiate or apply named facts and discharge the corresponding proof obligations.

  1. L4
    apply pythagorean_euclidean_constructor
  2. L5
    apply pythagorean_square_gap_from_order
  3. L6
    exact hbound

Library-wide reading audit

Original exact command ledger · 6 lines
  1. 0001intro m
  2. 0002intro n
  3. 0003intro hbound
  4. 0004apply pythagorean_euclidean_constructor
  5. 0005apply pythagorean_square_gap_from_order
  6. 0006exact hbound