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 expanded first-order arithmetic statement
forall N U n z. (((exists dst_positive_code_one_lookup_tabletable dst_positive_scale_one_lookup_tabletable dst_negative_code_one_lookup_tabletable dst_negative_scale_one_lookup_tabletable. (((U) = (((((dst_positive_code_one_lookup_tabletable) + (dst_positive_scale_one_lookup_tabletable)) * S ((dst_positive_code_one_lookup_tabletable) + (dst_positive_scale_one_lookup_tabletable)) + ((dst_positive_scale_one_lookup_tabletable) + (dst_positive_scale_one_lookup_tabletable))) + (((dst_negative_code_one_lookup_tabletable) + (dst_negative_scale_one_lookup_tabletable)) * S ((dst_negative_code_one_lookup_tabletable) + (dst_negative_scale_one_lookup_tabletable)) + ((dst_negative_scale_one_lookup_tabletable) + (dst_negative_scale_one_lookup_tabletable)))) * S ((((dst_positive_code_one_lookup_tabletable) + (dst_positive_scale_one_lookup_tabletable)) * S ((dst_positive_code_one_lookup_tabletable) + (dst_positive_scale_one_lookup_tabletable)) + ((dst_positive_scale_one_lookup_tabletable) + (dst_positive_scale_one_lookup_tabletable))) + (((dst_negative_code_one_lookup_tabletable) + (dst_negative_scale_one_lookup_tabletable)) * S ((dst_negative_code_one_lookup_tabletable) + (dst_negative_scale_one_lookup_tabletable)) + ((dst_negative_scale_one_lookup_tabletable) + (dst_negative_scale_one_lookup_tabletable)))) + ((((dst_negative_code_one_lookup_tabletable) + (dst_negative_scale_one_lookup_tabletable)) * S ((dst_negative_code_one_lookup_tabletable) + (dst_negative_scale_one_lookup_tabletable)) + ((dst_negative_scale_one_lookup_tabletable) + (dst_negative_scale_one_lookup_tabletable))) + (((dst_negative_code_one_lookup_tabletable) + (dst_negative_scale_one_lookup_tabletable)) * S ((dst_negative_code_one_lookup_tabletable) + (dst_negative_scale_one_lookup_tabletable)) + ((dst_negative_scale_one_lookup_tabletable) + (dst_negative_scale_one_lookup_tabletable)))))) /\ (forall dst_index_one_lookup_tabletable. (exists pvs_le_gap_one_lookup_tabletabledomain. pvs_le_gap_one_lookup_tabletabledomain + (dst_index_one_lookup_tabletable) = (N)) -> exists dst_positive_one_lookup_tabletable dst_negative_one_lookup_tabletable dst_value_one_lookup_tabletable. ((((exists ff_h_pvs_one_lookup_tabletableentrypositive. ff_h_pvs_one_lookup_tabletableentrypositive + S (dst_positive_one_lookup_tabletable) = S ((S (dst_index_one_lookup_tabletable)) * dst_positive_scale_one_lookup_tabletable)) /\ exists ff_q_pvs_one_lookup_tabletableentrypositive. dst_positive_code_one_lookup_tabletable = ff_q_pvs_one_lookup_tabletableentrypositive * S ((S (dst_index_one_lookup_tabletable)) * dst_positive_scale_one_lookup_tabletable) + (dst_positive_one_lookup_tabletable))) /\ (((((exists ff_h_pvs_one_lookup_tabletableentrynegative. ff_h_pvs_one_lookup_tabletableentrynegative + S (dst_negative_one_lookup_tabletable) = S ((S (dst_index_one_lookup_tabletable)) * dst_negative_scale_one_lookup_tabletable)) /\ exists ff_q_pvs_one_lookup_tabletableentrynegative. dst_negative_code_one_lookup_tabletable = ff_q_pvs_one_lookup_tabletableentrynegative * S ((S (dst_index_one_lookup_tabletable)) * dst_negative_scale_one_lookup_tabletable) + (dst_negative_one_lookup_tabletable))) /\ (exists ge_balance_positive_one_lookup_tabletableentryvalue ge_balance_negative_one_lookup_tabletableentryvalue. (((((dst_value_one_lookup_tabletable) = 2 * (ge_balance_positive_one_lookup_tabletableentryvalue) /\ (ge_balance_negative_one_lookup_tabletableentryvalue) = 0) \/ exists ge_signed_half_one_lookup_tabletableentryvaluedecode. (((dst_value_one_lookup_tabletable) = 2 * ge_signed_half_one_lookup_tabletableentryvaluedecode + 1 /\ (ge_balance_positive_one_lookup_tabletableentryvalue) = 0) /\ (ge_balance_negative_one_lookup_tabletableentryvalue) = S ge_signed_half_one_lookup_tabletableentryvaluedecode))) /\ ((dst_positive_one_lookup_tabletable) + ge_balance_negative_one_lookup_tabletableentryvalue = (dst_negative_one_lookup_tabletable) + ge_balance_positive_one_lookup_tabletableentryvalue))))))))) /\ (forall du_index_one_lookup_table du_value_one_lookup_table. ~(du_index_one_lookup_table=0) -> (exists pvs_le_gap_one_lookup_tablebound. pvs_le_gap_one_lookup_tablebound + (du_index_one_lookup_table) = (N)) -> (exists dst_positive_code_one_lookup_tableentry dst_positive_scale_one_lookup_tableentry dst_negative_code_one_lookup_tableentry dst_negative_scale_one_lookup_tableentry dst_positive_one_lookup_tableentry dst_negative_one_lookup_tableentry. (((U) = (((((dst_positive_code_one_lookup_tableentry) + (dst_positive_scale_one_lookup_tableentry)) * S ((dst_positive_code_one_lookup_tableentry) + (dst_positive_scale_one_lookup_tableentry)) + ((dst_positive_scale_one_lookup_tableentry) + (dst_positive_scale_one_lookup_tableentry))) + (((dst_negative_code_one_lookup_tableentry) + (dst_negative_scale_one_lookup_tableentry)) * S ((dst_negative_code_one_lookup_tableentry) + (dst_negative_scale_one_lookup_tableentry)) + ((dst_negative_scale_one_lookup_tableentry) + (dst_negative_scale_one_lookup_tableentry)))) * S ((((dst_positive_code_one_lookup_tableentry) + (dst_positive_scale_one_lookup_tableentry)) * S ((dst_positive_code_one_lookup_tableentry) + (dst_positive_scale_one_lookup_tableentry)) + ((dst_positive_scale_one_lookup_tableentry) + (dst_positive_scale_one_lookup_tableentry))) + (((dst_negative_code_one_lookup_tableentry) + (dst_negative_scale_one_lookup_tableentry)) * S ((dst_negative_code_one_lookup_tableentry) + (dst_negative_scale_one_lookup_tableentry)) + ((dst_negative_scale_one_lookup_tableentry) + (dst_negative_scale_one_lookup_tableentry)))) + ((((dst_negative_code_one_lookup_tableentry) + (dst_negative_scale_one_lookup_tableentry)) * S ((dst_negative_code_one_lookup_tableentry) + (dst_negative_scale_one_lookup_tableentry)) + ((dst_negative_scale_one_lookup_tableentry) + (dst_negative_scale_one_lookup_tableentry))) + (((dst_negative_code_one_lookup_tableentry) + (dst_negative_scale_one_lookup_tableentry)) * S ((dst_negative_code_one_lookup_tableentry) + (dst_negative_scale_one_lookup_tableentry)) + ((dst_negative_scale_one_lookup_tableentry) + (dst_negative_scale_one_lookup_tableentry)))))) /\ (((((exists ff_h_pvs_one_lookup_tableentrypositive. ff_h_pvs_one_lookup_tableentrypositive + S (dst_positive_one_lookup_tableentry) = S ((S (du_index_one_lookup_table)) * dst_positive_scale_one_lookup_tableentry)) /\ exists ff_q_pvs_one_lookup_tableentrypositive. dst_positive_code_one_lookup_tableentry = ff_q_pvs_one_lookup_tableentrypositive * S ((S (du_index_one_lookup_table)) * dst_positive_scale_one_lookup_tableentry) + (dst_positive_one_lookup_tableentry))) /\ (((((exists ff_h_pvs_one_lookup_tableentrynegative. ff_h_pvs_one_lookup_tableentrynegative + S (dst_negative_one_lookup_tableentry) = S ((S (du_index_one_lookup_table)) * dst_negative_scale_one_lookup_tableentry)) /\ exists ff_q_pvs_one_lookup_tableentrynegative. dst_negative_code_one_lookup_tableentry = ff_q_pvs_one_lookup_tableentrynegative * S ((S (du_index_one_lookup_table)) * dst_negative_scale_one_lookup_tableentry) + (dst_negative_one_lookup_tableentry))) /\ (exists ge_balance_positive_one_lookup_tableentryvalue ge_balance_negative_one_lookup_tableentryvalue. (((((du_value_one_lookup_table) = 2 * (ge_balance_positive_one_lookup_tableentryvalue) /\ (ge_balance_negative_one_lookup_tableentryvalue) = 0) \/ exists ge_signed_half_one_lookup_tableentryvaluedecode. (((du_value_one_lookup_table) = 2 * ge_signed_half_one_lookup_tableentryvaluedecode + 1 /\ (ge_balance_positive_one_lookup_tableentryvalue) = 0) /\ (ge_balance_negative_one_lookup_tableentryvalue) = S ge_signed_half_one_lookup_tableentryvaluedecode))) /\ ((dst_positive_one_lookup_tableentry) + ge_balance_negative_one_lookup_tableentryvalue = (dst_negative_one_lookup_tableentry) + ge_balance_positive_one_lookup_tableentryvalue))))))))) -> du_value_one_lookup_table=2))) -> ~(n=0) -> (exists pvs_le_gap_one_lookup_bound. pvs_le_gap_one_lookup_bound + (n) = (N)) -> (exists dst_positive_code_one_lookup_entry dst_positive_scale_one_lookup_entry dst_negative_code_one_lookup_entry dst_negative_scale_one_lookup_entry dst_positive_one_lookup_entry dst_negative_one_lookup_entry. (((U) = (((((dst_positive_code_one_lookup_entry) + (dst_positive_scale_one_lookup_entry)) * S ((dst_positive_code_one_lookup_entry) + (dst_positive_scale_one_lookup_entry)) + ((dst_positive_scale_one_lookup_entry) + (dst_positive_scale_one_lookup_entry))) + (((dst_negative_code_one_lookup_entry) + (dst_negative_scale_one_lookup_entry)) * S ((dst_negative_code_one_lookup_entry) + (dst_negative_scale_one_lookup_entry)) + ((dst_negative_scale_one_lookup_entry) + (dst_negative_scale_one_lookup_entry)))) * S ((((dst_positive_code_one_lookup_entry) + (dst_positive_scale_one_lookup_entry)) * S ((dst_positive_code_one_lookup_entry) + (dst_positive_scale_one_lookup_entry)) + ((dst_positive_scale_one_lookup_entry) + (dst_positive_scale_one_lookup_entry))) + (((dst_negative_code_one_lookup_entry) + (dst_negative_scale_one_lookup_entry)) * S ((dst_negative_code_one_lookup_entry) + (dst_negative_scale_one_lookup_entry)) + ((dst_negative_scale_one_lookup_entry) + (dst_negative_scale_one_lookup_entry)))) + ((((dst_negative_code_one_lookup_entry) + (dst_negative_scale_one_lookup_entry)) * S ((dst_negative_code_one_lookup_entry) + (dst_negative_scale_one_lookup_entry)) + ((dst_negative_scale_one_lookup_entry) + (dst_negative_scale_one_lookup_entry))) + (((dst_negative_code_one_lookup_entry) + (dst_negative_scale_one_lookup_entry)) * S ((dst_negative_code_one_lookup_entry) + (dst_negative_scale_one_lookup_entry)) + ((dst_negative_scale_one_lookup_entry) + (dst_negative_scale_one_lookup_entry)))))) /\ (((((exists ff_h_pvs_one_lookup_entrypositive. ff_h_pvs_one_lookup_entrypositive + S (dst_positive_one_lookup_entry) = S ((S (n)) * dst_positive_scale_one_lookup_entry)) /\ exists ff_q_pvs_one_lookup_entrypositive. dst_positive_code_one_lookup_entry = ff_q_pvs_one_lookup_entrypositive * S ((S (n)) * dst_positive_scale_one_lookup_entry) + (dst_positive_one_lookup_entry))) /\ (((((exists ff_h_pvs_one_lookup_entrynegative. ff_h_pvs_one_lookup_entrynegative + S (dst_negative_one_lookup_entry) = S ((S (n)) * dst_negative_scale_one_lookup_entry)) /\ exists ff_q_pvs_one_lookup_entrynegative. dst_negative_code_one_lookup_entry = ff_q_pvs_one_lookup_entrynegative * S ((S (n)) * dst_negative_scale_one_lookup_entry) + (dst_negative_one_lookup_entry))) /\ (exists ge_balance_positive_one_lookup_entryvalue ge_balance_negative_one_lookup_entryvalue. (((((z) = 2 * (ge_balance_positive_one_lookup_entryvalue) /\ (ge_balance_negative_one_lookup_entryvalue) = 0) \/ exists ge_signed_half_one_lookup_entryvaluedecode. (((z) = 2 * ge_signed_half_one_lookup_entryvaluedecode + 1 /\ (ge_balance_positive_one_lookup_entryvalue) = 0) /\ (ge_balance_negative_one_lookup_entryvalue) = S ge_signed_half_one_lookup_entryvaluedecode))) /\ ((dst_positive_one_lookup_entry) + ge_balance_negative_one_lookup_entryvalue = (dst_negative_one_lookup_entry) + ge_balance_positive_one_lookup_entryvalue))))))))) -> z=2Constructive proof overview
Generated structural guide
Every actual positive in-domain lookup in a constant-one table is canonical signed one, independently of its zero entry.
The unchanged tactic script uses 0 declared prerequisites and contains 15 exact native proof lines.
Alpha v34 checked-use · first admitted v31 · independently kernel and Lean verified; not Stable
Proof neighborhood
Direct dependencies
Direct dependents
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
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 assumptionsL1–8
02Separate the logical casesL9–9
Follow the explicit conjunction, disjunction, witness, or contradiction step recorded below.
- L9
cases hu