GI0029

gaussian_product_difference

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

The actual Gaussian product distributes over subtraction in represented integer coordinates.

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 a b c d e f g h i j k l. (((((((((((a) * (((e) + (j))))) + (((b) * (((f) + (i))))))) + (((((c) * (((h) + (k))))) + (((d) * (((g) + (l))))))))) + (((((((((a) * (f))) + (((b) * (e))))) + (((((c) * (g))) + (((d) * (h))))))) + (((((((a) * (i))) + (((b) * (j))))) + (((((c) * (l))) + (((d) * (k)))))))))) = ((((((((((a) * (e))) + (((b) * (f))))) + (((((c) * (h))) + (((d) * (g))))))) + (((((((a) * (j))) + (((b) * (i))))) + (((((c) * (k))) + (((d) * (l))))))))) + (((((((a) * (((f) + (i))))) + (((b) * (((e) + (j))))))) + (((((c) * (((g) + (l))))) + (((d) * (((h) + (k))))))))))) /\ (((((((((a) * (((g) + (l))))) + (((b) * (((h) + (k))))))) + (((((c) * (((e) + (j))))) + (((d) * (((f) + (i))))))))) + (((((((((a) * (h))) + (((b) * (g))))) + (((((c) * (f))) + (((d) * (e))))))) + (((((((a) * (k))) + (((b) * (l))))) + (((((c) * (i))) + (((d) * (j)))))))))) = ((((((((((a) * (g))) + (((b) * (h))))) + (((((c) * (e))) + (((d) * (f))))))) + (((((((a) * (l))) + (((b) * (k))))) + (((((c) * (j))) + (((d) * (i))))))))) + (((((((a) * (((h) + (k))))) + (((b) * (((g) + (l))))))) + (((((c) * (((f) + (i))))) + (((d) * (((e) + (j)))))))))))))

Constructive proof overview

Generated structural guide

The actual Gaussian product distributes over subtraction in represented integer coordinates.

The unchanged tactic script uses 4 declared prerequisites and contains 21 exact native proof lines.

Alpha v34 checked-use · first admitted v28 · independently kernel and Lean verified; not Stable

Proof neighborhood

Direct dependencies

GI0024 gaussian_product_difference_real_positive GI0025 gaussian_product_difference_real_negative GI0026 gaussian_product_difference_imaginary_positive GI0027 gaussian_product_difference_imaginary_negative

Direct dependents

GI0033 gaussian_residual_conjugate_identity

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

21 script commands · 11 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 (4)
gaussian product difference real positivegaussian product difference real negativegaussian product difference imaginary positivegaussian product difference imaginary negative
01Fix variables and assumptionsL1–10

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

  1. L1
    intro a
  2. L2
    intro b
  3. L3
    intro c
  4. L4
    intro d
  5. L5
    intro e
  6. L6
    intro f
  7. L7
    intro g
  8. L8
    intro h
  9. L9
    intro i
  10. L10
    intro j
02Fix variables and assumptionsL11–12

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

  1. L11
    intro k
  2. L12
    intro l
03Separate the logical casesL13–13

Follow the explicit conjunction, disjunction, witness, or contradiction step recorded below.

  1. L13
    split
04Calculate and transport equalitiesL14–14

Carry out the recorded arithmetic or equality steps; inspect the exact commands for their direction and premises.

  1. L14
    congr
05Use earlier factsL15–15

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

  1. L15
    apply gaussian_product_difference_real_positive
06Calculate and transport equalitiesL16–16

Carry out the recorded arithmetic or equality steps; inspect the exact commands for their direction and premises.

  1. L16
    symm
07Use earlier factsL17–17

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

  1. L17
    apply gaussian_product_difference_real_negative
08Calculate and transport equalitiesL18–18

Carry out the recorded arithmetic or equality steps; inspect the exact commands for their direction and premises.

  1. L18
    congr
09Use earlier factsL19–19

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

  1. L19
    apply gaussian_product_difference_imaginary_positive
10Calculate and transport equalitiesL20–20

Carry out the recorded arithmetic or equality steps; inspect the exact commands for their direction and premises.

  1. L20
    symm
11Use earlier factsL21–21

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

  1. L21
    apply gaussian_product_difference_imaginary_negative

Library-wide reading audit

Original exact command ledger · 21 lines
  1. 0001intro a
  2. 0002intro b
  3. 0003intro c
  4. 0004intro d
  5. 0005intro e
  6. 0006intro f
  7. 0007intro g
  8. 0008intro h
  9. 0009intro i
  10. 0010intro j
  11. 0011intro k
  12. 0012intro l
  13. 0013split
  14. 0014congr
  15. 0015apply gaussian_product_difference_real_positive
  16. 0016symm
  17. 0017apply gaussian_product_difference_real_negative
  18. 0018congr
  19. 0019apply gaussian_product_difference_imaginary_positive
  20. 0020symm
  21. 0021apply gaussian_product_difference_imaginary_negative