Current library: Alpha v34, 4,223 checked-use theorems; Stable remains 432. Historical first admissions, original proof editions, and non-admitted aliases are preserved.
Each retained summand has a witnessed n=d*q and actual signed multiplication. Zero and nondivisors contribute zero. Input and output values at zero are unrestricted; uniqueness is for positive represented values. The separate inverse family proves the unit-at-one criterion. Full G009 multiplicative-function closure is now admitted in the separate Alpha-v32 multiplicative-convolution family.
Exact theorem in conservative defined notation
∀ F. ∀ G. ∀ n. ∀ d. ∀ q. ∀ a. ∀ b. ∀ z. ¬d = 0 → n = d · q → ArithAt(F,d,a) → ArithAt(G,q,b) → SignedMul(a,b,z) → DirichletEntry(F,G,n,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 26 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.
01Fix variables and assumptionsL1–10
02Fix variables and assumptionsL11–13
03Separate the logical casesL14–15
04Use earlier factsL16–16
Instantiate or apply named facts and discharge the corresponding proof obligations.
- L16
exact hd
05Construct an explicit witnessL17–19
06Separate the logical casesL20–20
Follow the explicit conjunction, disjunction, witness, or contradiction step recorded below.
- L20
split
07Use earlier factsL21–21
Instantiate or apply named facts and discharge the corresponding proof obligations.
- L21
exact hq
08Separate the logical casesL22–22
Follow the explicit conjunction, disjunction, witness, or contradiction step recorded below.
- L22
split
09Use earlier factsL23–23
Instantiate or apply named facts and discharge the corresponding proof obligations.
- L23
exact ha
10Separate the logical casesL24–24
Follow the explicit conjunction, disjunction, witness, or contradiction step recorded below.
- L24
split