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.
Historical partial components only: this chapter proves arbitrary natural polynomial values and unique formal derivatives. G095 is now closed in the separate Alpha-v27 hensel-lifting branch for integer polynomials, unrestricted input roots, unique canonical lifts, and every positive prime power. Full G095 proof · Alpha v27
Exact theorem in conservative defined notation
∀ b. ∀ c. ∀ t. ∀ l. ∃ z. HornerDerivativeOnly(b,c,t,l,z) ∧ (∀ x. HornerDerivativeOnly(b,c,t,l,x) → z = x)
Every linked abbreviation expands hygienically to the identical original native formula.
Definition DAG
Actual proof prerequisites
Complete unchanged native tactic proof
All 23 lines are the exact independently kernel-checked original 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 assumptionsL1–4
02Use earlier factsL5–8
03Separate the logical casesL9–9
Follow the explicit conjunction, disjunction, witness, or contradiction step recorded below.
- L9
cases beta_horner_derivative_only_exists
04Construct an explicit witnessL10–10
Supply the displayed value, then prove that it has the required property.
- L10
exists x
05Separate the logical casesL11–11
Follow the explicit conjunction, disjunction, witness, or contradiction step recorded below.
- L11
split
06Use earlier factsL12–12
Instantiate or apply named facts and discharge the corresponding proof obligations.
- L12
exact beta_horner_derivative_only_exists_witness
07Fix variables and assumptionsL13–14
08Use earlier factsL15–23
Instantiate or apply named facts and discharge the corresponding proof obligations.
- L15
specialize beta_horner_derivative_only_functional b - L16
specialize beta_horner_derivative_only_functional c - L17
specialize beta_horner_derivative_only_functional t - L18
specialize beta_horner_derivative_only_functional l - L19
specialize beta_horner_derivative_only_functional x - L20
specialize beta_horner_derivative_only_functional w - L21
apply beta_horner_derivative_only_functional - L22
exact beta_horner_derivative_only_exists_witness - L23
exact hw
Original defined command ledger · 23 lines
- 0001
intro b - 0002
intro c - 0003
intro t - 0004
intro l - 0005
specialize beta_horner_derivative_only_exists b - 0006
specialize beta_horner_derivative_only_exists c - 0007
specialize beta_horner_derivative_only_exists t - 0008
specialize beta_horner_derivative_only_exists l - 0009
cases beta_horner_derivative_only_exists - 0010
exists x - 0011
split - 0012
exact beta_horner_derivative_only_exists_witness - 0013
intro w - 0014
intro hw - 0015
specialize beta_horner_derivative_only_functional b - 0016
specialize beta_horner_derivative_only_functional c - 0017
specialize beta_horner_derivative_only_functional t - 0018
specialize beta_horner_derivative_only_functional l - 0019
specialize beta_horner_derivative_only_functional x - 0020
specialize beta_horner_derivative_only_functional w - 0021
apply beta_horner_derivative_only_functional - 0022
exact beta_horner_derivative_only_exists_witness - 0023
exact hw