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.
Inputs are genuine canonical signed-pair codes, not arbitrary naturals. Products start at the actual Gaussian identity, whose code is six. The factor list uses the proved prime-divisor property; irreducibility alone is not silently renamed primality. Uniqueness supplies equal lengths, a bounded bijection, and an actual unit at each match, including repeated factors. Units have empty factorizations and zero is excluded. Sorted primary representatives, Gaussian prime classification, and Eisenstein factorization are separate targets.
Exact theorem in conservative defined notation
∀ d. ∀ a. ∀ z. GDvd(d,a) → GDvd(a,z) → GDvd(d,z)
Every linked abbreviation expands hygienically to the identical original native formula.
Definition DAG
Actual proof prerequisites
Complete tactic proof in conservative notation
All 33 original proof lines are preserved. Only local proposition formulas are abbreviated; every abbreviation has an exact binder-safe expansion check. The linked exact edition contains the unchanged replay script.
Read the argument
Proof checkpoints
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 assumptionsL1–5
02Separate the logical casesL6–7
03Establish hqL8–17
Establish this local claim before using it. It is not an additional assumption. The following proof commands apply gaussian multiply exists.
- L8
- L9
specialize gaussian_multiply_exists (x) - L10
specialize gaussian_multiply_exists (x1) - L11
apply gaussian_multiply_exists - L12
specialize gaussian_multiply_input_right_valid (d) - L13
specialize gaussian_multiply_input_right_valid (x) - L14
specialize gaussian_multiply_input_right_valid (a) - L15
apply gaussian_multiply_input_right_valid - L16
exact hA_witness - L17
specialize gaussian_multiply_input_right_valid (a)
04Use earlier factsL18–21
05Separate the logical casesL22–22
Follow the explicit conjunction, disjunction, witness, or contradiction step recorded below.
- L22
cases hq
06Construct an explicit witnessL23–23
Supply the displayed value, then prove that it has the required property.
- L23
exists (x2)
07Use earlier factsL24–33
Instantiate or apply named facts and discharge the corresponding proof obligations.
- L24
specialize gaussian_multiply_associative (d) - L25
specialize gaussian_multiply_associative (x) - L26
specialize gaussian_multiply_associative (x1) - L27
specialize gaussian_multiply_associative (a) - L28
specialize gaussian_multiply_associative (x2) - L29
specialize gaussian_multiply_associative (z) - L30
apply gaussian_multiply_associative - L31
exact hA_witness - L32
exact hZ_witness - L33
exact hq_witness
Original defined command ledger · 33 lines
- 0001
intro d - 0002
intro a - 0003
intro z - 0004
intro hA - 0005
intro hZ - 0006
cases hA - 0007
cases hZ - 0008
have hq : ∃ q. GMul(x,x1,q) - 0009
specialize gaussian_multiply_exists (x) - 0010
specialize gaussian_multiply_exists (x1) - 0011
apply gaussian_multiply_exists - 0012
specialize gaussian_multiply_input_right_valid (d) - 0013
specialize gaussian_multiply_input_right_valid (x) - 0014
specialize gaussian_multiply_input_right_valid (a) - 0015
apply gaussian_multiply_input_right_valid - 0016
exact hA_witness - 0017
specialize gaussian_multiply_input_right_valid (a) - 0018
specialize gaussian_multiply_input_right_valid (x1) - 0019
specialize gaussian_multiply_input_right_valid (z) - 0020
apply gaussian_multiply_input_right_valid - 0021
exact hZ_witness - 0022
cases hq - 0023
exists (x2) - 0024
specialize gaussian_multiply_associative (d) - 0025
specialize gaussian_multiply_associative (x) - 0026
specialize gaussian_multiply_associative (x1) - 0027
specialize gaussian_multiply_associative (a) - 0028
specialize gaussian_multiply_associative (x2) - 0029
specialize gaussian_multiply_associative (z) - 0030
apply gaussian_multiply_associative - 0031
exact hA_witness - 0032
exact hZ_witness - 0033
exact hq_witness