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 g l. (exists egt_list_egt_anchored egt_history_egt_anchored egt_scale_egt_anchored. ((exists cf_gcd_egt_egt_anchored_trace. ((((exists ff_h_cf_egt_egt_anchored_trace_initial_state. ff_h_cf_egt_egt_anchored_trace_initial_state + S (((cf_gcd_egt_egt_anchored_trace) + (((0) + (0)) * S ((0) + (0)) + ((0) + (0)))) * S ((cf_gcd_egt_egt_anchored_trace) + (((0) + (0)) * S ((0) + (0)) + ((0) + (0)))) + ((((0) + (0)) * S ((0) + (0)) + ((0) + (0))) + (((0) + (0)) * S ((0) + (0)) + ((0) + (0))))) = S ((S (0)) * egt_scale_egt_anchored)) /\ exists ff_q_cf_egt_egt_anchored_trace_initial_state. egt_history_egt_anchored = ff_q_cf_egt_egt_anchored_trace_initial_state * S ((S (0)) * egt_scale_egt_anchored) + (((cf_gcd_egt_egt_anchored_trace) + (((0) + (0)) * S ((0) + (0)) + ((0) + (0)))) * S ((cf_gcd_egt_egt_anchored_trace) + (((0) + (0)) * S ((0) + (0)) + ((0) + (0)))) + ((((0) + (0)) * S ((0) + (0)) + ((0) + (0))) + (((0) + (0)) * S ((0) + (0)) + ((0) + (0))))))) /\ ((((exists ff_h_cf_egt_egt_anchored_trace_terminal_state. ff_h_cf_egt_egt_anchored_trace_terminal_state + S (((a) + (((b) + (egt_list_egt_anchored)) * S ((b) + (egt_list_egt_anchored)) + ((egt_list_egt_anchored) + (egt_list_egt_anchored)))) * S ((a) + (((b) + (egt_list_egt_anchored)) * S ((b) + (egt_list_egt_anchored)) + ((egt_list_egt_anchored) + (egt_list_egt_anchored)))) + ((((b) + (egt_list_egt_anchored)) * S ((b) + (egt_list_egt_anchored)) + ((egt_list_egt_anchored) + (egt_list_egt_anchored))) + (((b) + (egt_list_egt_anchored)) * S ((b) + (egt_list_egt_anchored)) + ((egt_list_egt_anchored) + (egt_list_egt_anchored))))) = S ((S (l)) * egt_scale_egt_anchored)) /\ exists ff_q_cf_egt_egt_anchored_trace_terminal_state. egt_history_egt_anchored = ff_q_cf_egt_egt_anchored_trace_terminal_state * S ((S (l)) * egt_scale_egt_anchored) + (((a) + (((b) + (egt_list_egt_anchored)) * S ((b) + (egt_list_egt_anchored)) + ((egt_list_egt_anchored) + (egt_list_egt_anchored)))) * S ((a) + (((b) + (egt_list_egt_anchored)) * S ((b) + (egt_list_egt_anchored)) + ((egt_list_egt_anchored) + (egt_list_egt_anchored)))) + ((((b) + (egt_list_egt_anchored)) * S ((b) + (egt_list_egt_anchored)) + ((egt_list_egt_anchored) + (egt_list_egt_anchored))) + (((b) + (egt_list_egt_anchored)) * S ((b) + (egt_list_egt_anchored)) + ((egt_list_egt_anchored) + (egt_list_egt_anchored))))))) /\ forall cf_index_egt_egt_anchored_trace. (exists ff_lt_cf_egt_egt_anchored_trace_index. ff_lt_cf_egt_egt_anchored_trace_index + S cf_index_egt_egt_anchored_trace = l) -> exists cf_old_a_egt_egt_anchored_trace cf_old_b_egt_egt_anchored_trace cf_tail_egt_egt_anchored_trace cf_new_a_egt_egt_anchored_trace cf_new_b_egt_egt_anchored_trace cf_head_egt_egt_anchored_trace cf_quotient_egt_egt_anchored_trace. ((((exists ff_h_cf_egt_egt_anchored_trace_previous_state. ff_h_cf_egt_egt_anchored_trace_previous_state + S (((cf_old_a_egt_egt_anchored_trace) + (((cf_old_b_egt_egt_anchored_trace) + (cf_tail_egt_egt_anchored_trace)) * S ((cf_old_b_egt_egt_anchored_trace) + (cf_tail_egt_egt_anchored_trace)) + ((cf_tail_egt_egt_anchored_trace) + (cf_tail_egt_egt_anchored_trace)))) * S ((cf_old_a_egt_egt_anchored_trace) + (((cf_old_b_egt_egt_anchored_trace) + (cf_tail_egt_egt_anchored_trace)) * S ((cf_old_b_egt_egt_anchored_trace) + (cf_tail_egt_egt_anchored_trace)) + ((cf_tail_egt_egt_anchored_trace) + (cf_tail_egt_egt_anchored_trace)))) + ((((cf_old_b_egt_egt_anchored_trace) + (cf_tail_egt_egt_anchored_trace)) * S ((cf_old_b_egt_egt_anchored_trace) + (cf_tail_egt_egt_anchored_trace)) + ((cf_tail_egt_egt_anchored_trace) + (cf_tail_egt_egt_anchored_trace))) + (((cf_old_b_egt_egt_anchored_trace) + (cf_tail_egt_egt_anchored_trace)) * S ((cf_old_b_egt_egt_anchored_trace) + (cf_tail_egt_egt_anchored_trace)) + ((cf_tail_egt_egt_anchored_trace) + (cf_tail_egt_egt_anchored_trace))))) = S ((S (cf_index_egt_egt_anchored_trace)) * egt_scale_egt_anchored)) /\ exists ff_q_cf_egt_egt_anchored_trace_previous_state. egt_history_egt_anchored = ff_q_cf_egt_egt_anchored_trace_previous_state * S ((S (cf_index_egt_egt_anchored_trace)) * egt_scale_egt_anchored) + (((cf_old_a_egt_egt_anchored_trace) + (((cf_old_b_egt_egt_anchored_trace) + (cf_tail_egt_egt_anchored_trace)) * S ((cf_old_b_egt_egt_anchored_trace) + (cf_tail_egt_egt_anchored_trace)) + ((cf_tail_egt_egt_anchored_trace) + (cf_tail_egt_egt_anchored_trace)))) * S ((cf_old_a_egt_egt_anchored_trace) + (((cf_old_b_egt_egt_anchored_trace) + (cf_tail_egt_egt_anchored_trace)) * S ((cf_old_b_egt_egt_anchored_trace) + (cf_tail_egt_egt_anchored_trace)) + ((cf_tail_egt_egt_anchored_trace) + (cf_tail_egt_egt_anchored_trace)))) + ((((cf_old_b_egt_egt_anchored_trace) + (cf_tail_egt_egt_anchored_trace)) * S ((cf_old_b_egt_egt_anchored_trace) + (cf_tail_egt_egt_anchored_trace)) + ((cf_tail_egt_egt_anchored_trace) + (cf_tail_egt_egt_anchored_trace))) + (((cf_old_b_egt_egt_anchored_trace) + (cf_tail_egt_egt_anchored_trace)) * S ((cf_old_b_egt_egt_anchored_trace) + (cf_tail_egt_egt_anchored_trace)) + ((cf_tail_egt_egt_anchored_trace) + (cf_tail_egt_egt_anchored_trace))))))) /\ ((((exists ff_h_cf_egt_egt_anchored_trace_following_state. ff_h_cf_egt_egt_anchored_trace_following_state + S (((cf_new_a_egt_egt_anchored_trace) + (((cf_new_b_egt_egt_anchored_trace) + (cf_head_egt_egt_anchored_trace)) * S ((cf_new_b_egt_egt_anchored_trace) + (cf_head_egt_egt_anchored_trace)) + ((cf_head_egt_egt_anchored_trace) + (cf_head_egt_egt_anchored_trace)))) * S ((cf_new_a_egt_egt_anchored_trace) + (((cf_new_b_egt_egt_anchored_trace) + (cf_head_egt_egt_anchored_trace)) * S ((cf_new_b_egt_egt_anchored_trace) + (cf_head_egt_egt_anchored_trace)) + ((cf_head_egt_egt_anchored_trace) + (cf_head_egt_egt_anchored_trace)))) + ((((cf_new_b_egt_egt_anchored_trace) + (cf_head_egt_egt_anchored_trace)) * S ((cf_new_b_egt_egt_anchored_trace) + (cf_head_egt_egt_anchored_trace)) + ((cf_head_egt_egt_anchored_trace) + (cf_head_egt_egt_anchored_trace))) + (((cf_new_b_egt_egt_anchored_trace) + (cf_head_egt_egt_anchored_trace)) * S ((cf_new_b_egt_egt_anchored_trace) + (cf_head_egt_egt_anchored_trace)) + ((cf_head_egt_egt_anchored_trace) + (cf_head_egt_egt_anchored_trace))))) = S ((S (S cf_index_egt_egt_anchored_trace)) * egt_scale_egt_anchored)) /\ exists ff_q_cf_egt_egt_anchored_trace_following_state. egt_history_egt_anchored = ff_q_cf_egt_egt_anchored_trace_following_state * S ((S (S cf_index_egt_egt_anchored_trace)) * egt_scale_egt_anchored) + (((cf_new_a_egt_egt_anchored_trace) + (((cf_new_b_egt_egt_anchored_trace) + (cf_head_egt_egt_anchored_trace)) * S ((cf_new_b_egt_egt_anchored_trace) + (cf_head_egt_egt_anchored_trace)) + ((cf_head_egt_egt_anchored_trace) + (cf_head_egt_egt_anchored_trace)))) * S ((cf_new_a_egt_egt_anchored_trace) + (((cf_new_b_egt_egt_anchored_trace) + (cf_head_egt_egt_anchored_trace)) * S ((cf_new_b_egt_egt_anchored_trace) + (cf_head_egt_egt_anchored_trace)) + ((cf_head_egt_egt_anchored_trace) + (cf_head_egt_egt_anchored_trace)))) + ((((cf_new_b_egt_egt_anchored_trace) + (cf_head_egt_egt_anchored_trace)) * S ((cf_new_b_egt_egt_anchored_trace) + (cf_head_egt_egt_anchored_trace)) + ((cf_head_egt_egt_anchored_trace) + (cf_head_egt_egt_anchored_trace))) + (((cf_new_b_egt_egt_anchored_trace) + (cf_head_egt_egt_anchored_trace)) * S ((cf_new_b_egt_egt_anchored_trace) + (cf_head_egt_egt_anchored_trace)) + ((cf_head_egt_egt_anchored_trace) + (cf_head_egt_egt_anchored_trace))))))) /\ (cf_new_b_egt_egt_anchored_trace = cf_old_a_egt_egt_anchored_trace /\ (cf_new_a_egt_egt_anchored_trace = cf_new_b_egt_egt_anchored_trace * cf_quotient_egt_egt_anchored_trace + cf_old_b_egt_egt_anchored_trace /\ ((exists ff_lt_cf_egt_egt_anchored_trace_remainder. ff_lt_cf_egt_egt_anchored_trace_remainder + S cf_old_b_egt_egt_anchored_trace = cf_new_b_egt_egt_anchored_trace) /\ (cf_head_egt_egt_anchored_trace = S ((cf_quotient_egt_egt_anchored_trace + cf_tail_egt_egt_anchored_trace) * S (cf_quotient_egt_egt_anchored_trace + cf_tail_egt_egt_anchored_trace) + (cf_tail_egt_egt_anchored_trace + cf_tail_egt_egt_anchored_trace))))))))))) /\ ((((exists ff_h_cf_egt_egt_anchored_initial_state. ff_h_cf_egt_egt_anchored_initial_state + S (((g) + (((0) + (0)) * S ((0) + (0)) + ((0) + (0)))) * S ((g) + (((0) + (0)) * S ((0) + (0)) + ((0) + (0)))) + ((((0) + (0)) * S ((0) + (0)) + ((0) + (0))) + (((0) + (0)) * S ((0) + (0)) + ((0) + (0))))) = S ((S (0)) * egt_scale_egt_anchored)) /\ exists ff_q_cf_egt_egt_anchored_initial_state. egt_history_egt_anchored = ff_q_cf_egt_egt_anchored_initial_state * S ((S (0)) * egt_scale_egt_anchored) + (((g) + (((0) + (0)) * S ((0) + (0)) + ((0) + (0)))) * S ((g) + (((0) + (0)) * S ((0) + (0)) + ((0) + (0)))) + ((((0) + (0)) * S ((0) + (0)) + ((0) + (0))) + (((0) + (0)) * S ((0) + (0)) + ((0) + (0))))))) /\ ((((exists ec_gcd_left_egt_egt_anchored_result. a = g * ec_gcd_left_egt_egt_anchored_result) /\ (exists ec_gcd_right_egt_egt_anchored_result. b = g * ec_gcd_right_egt_egt_anchored_result)) /\ forall ec_gcd_common_egt_egt_anchored_result. (exists ec_gcd_common_left_egt_egt_anchored_result. a = ec_gcd_common_egt_egt_anchored_result * ec_gcd_common_left_egt_egt_anchored_result) -> (exists ec_gcd_common_right_egt_egt_anchored_result. b = ec_gcd_common_egt_egt_anchored_result * ec_gcd_common_right_egt_egt_anchored_result) -> exists ec_gcd_greatest_egt_egt_anchored_result. g = ec_gcd_common_egt_egt_anchored_result * ec_gcd_greatest_egt_egt_anchored_result))))) -> exists s h e. ((exists cf_gcd_egt_projected. ((((exists ff_h_cf_egt_projected_initial_state. ff_h_cf_egt_projected_initial_state + S (((cf_gcd_egt_projected) + (((0) + (0)) * S ((0) + (0)) + ((0) + (0)))) * S ((cf_gcd_egt_projected) + (((0) + (0)) * S ((0) + (0)) + ((0) + (0)))) + ((((0) + (0)) * S ((0) + (0)) + ((0) + (0))) + (((0) + (0)) * S ((0) + (0)) + ((0) + (0))))) = S ((S (0)) * e)) /\ exists ff_q_cf_egt_projected_initial_state. h = ff_q_cf_egt_projected_initial_state * S ((S (0)) * e) + (((cf_gcd_egt_projected) + (((0) + (0)) * S ((0) + (0)) + ((0) + (0)))) * S ((cf_gcd_egt_projected) + (((0) + (0)) * S ((0) + (0)) + ((0) + (0)))) + ((((0) + (0)) * S ((0) + (0)) + ((0) + (0))) + (((0) + (0)) * S ((0) + (0)) + ((0) + (0))))))) /\ ((((exists ff_h_cf_egt_projected_terminal_state. ff_h_cf_egt_projected_terminal_state + S (((a) + (((b) + (s)) * S ((b) + (s)) + ((s) + (s)))) * S ((a) + (((b) + (s)) * S ((b) + (s)) + ((s) + (s)))) + ((((b) + (s)) * S ((b) + (s)) + ((s) + (s))) + (((b) + (s)) * S ((b) + (s)) + ((s) + (s))))) = S ((S (l)) * e)) /\ exists ff_q_cf_egt_projected_terminal_state. h = ff_q_cf_egt_projected_terminal_state * S ((S (l)) * e) + (((a) + (((b) + (s)) * S ((b) + (s)) + ((s) + (s)))) * S ((a) + (((b) + (s)) * S ((b) + (s)) + ((s) + (s)))) + ((((b) + (s)) * S ((b) + (s)) + ((s) + (s))) + (((b) + (s)) * S ((b) + (s)) + ((s) + (s))))))) /\ forall cf_index_egt_projected. (exists ff_lt_cf_egt_projected_index. ff_lt_cf_egt_projected_index + S cf_index_egt_projected = l) -> exists cf_old_a_egt_projected cf_old_b_egt_projected cf_tail_egt_projected cf_new_a_egt_projected cf_new_b_egt_projected cf_head_egt_projected cf_quotient_egt_projected. ((((exists ff_h_cf_egt_projected_previous_state. ff_h_cf_egt_projected_previous_state + S (((cf_old_a_egt_projected) + (((cf_old_b_egt_projected) + (cf_tail_egt_projected)) * S ((cf_old_b_egt_projected) + (cf_tail_egt_projected)) + ((cf_tail_egt_projected) + (cf_tail_egt_projected)))) * S ((cf_old_a_egt_projected) + (((cf_old_b_egt_projected) + (cf_tail_egt_projected)) * S ((cf_old_b_egt_projected) + (cf_tail_egt_projected)) + ((cf_tail_egt_projected) + (cf_tail_egt_projected)))) + ((((cf_old_b_egt_projected) + (cf_tail_egt_projected)) * S ((cf_old_b_egt_projected) + (cf_tail_egt_projected)) + ((cf_tail_egt_projected) + (cf_tail_egt_projected))) + (((cf_old_b_egt_projected) + (cf_tail_egt_projected)) * S ((cf_old_b_egt_projected) + (cf_tail_egt_projected)) + ((cf_tail_egt_projected) + (cf_tail_egt_projected))))) = S ((S (cf_index_egt_projected)) * e)) /\ exists ff_q_cf_egt_projected_previous_state. h = ff_q_cf_egt_projected_previous_state * S ((S (cf_index_egt_projected)) * e) + (((cf_old_a_egt_projected) + (((cf_old_b_egt_projected) + (cf_tail_egt_projected)) * S ((cf_old_b_egt_projected) + (cf_tail_egt_projected)) + ((cf_tail_egt_projected) + (cf_tail_egt_projected)))) * S ((cf_old_a_egt_projected) + (((cf_old_b_egt_projected) + (cf_tail_egt_projected)) * S ((cf_old_b_egt_projected) + (cf_tail_egt_projected)) + ((cf_tail_egt_projected) + (cf_tail_egt_projected)))) + ((((cf_old_b_egt_projected) + (cf_tail_egt_projected)) * S ((cf_old_b_egt_projected) + (cf_tail_egt_projected)) + ((cf_tail_egt_projected) + (cf_tail_egt_projected))) + (((cf_old_b_egt_projected) + (cf_tail_egt_projected)) * S ((cf_old_b_egt_projected) + (cf_tail_egt_projected)) + ((cf_tail_egt_projected) + (cf_tail_egt_projected))))))) /\ ((((exists ff_h_cf_egt_projected_following_state. ff_h_cf_egt_projected_following_state + S (((cf_new_a_egt_projected) + (((cf_new_b_egt_projected) + (cf_head_egt_projected)) * S ((cf_new_b_egt_projected) + (cf_head_egt_projected)) + ((cf_head_egt_projected) + (cf_head_egt_projected)))) * S ((cf_new_a_egt_projected) + (((cf_new_b_egt_projected) + (cf_head_egt_projected)) * S ((cf_new_b_egt_projected) + (cf_head_egt_projected)) + ((cf_head_egt_projected) + (cf_head_egt_projected)))) + ((((cf_new_b_egt_projected) + (cf_head_egt_projected)) * S ((cf_new_b_egt_projected) + (cf_head_egt_projected)) + ((cf_head_egt_projected) + (cf_head_egt_projected))) + (((cf_new_b_egt_projected) + (cf_head_egt_projected)) * S ((cf_new_b_egt_projected) + (cf_head_egt_projected)) + ((cf_head_egt_projected) + (cf_head_egt_projected))))) = S ((S (S cf_index_egt_projected)) * e)) /\ exists ff_q_cf_egt_projected_following_state. h = ff_q_cf_egt_projected_following_state * S ((S (S cf_index_egt_projected)) * e) + (((cf_new_a_egt_projected) + (((cf_new_b_egt_projected) + (cf_head_egt_projected)) * S ((cf_new_b_egt_projected) + (cf_head_egt_projected)) + ((cf_head_egt_projected) + (cf_head_egt_projected)))) * S ((cf_new_a_egt_projected) + (((cf_new_b_egt_projected) + (cf_head_egt_projected)) * S ((cf_new_b_egt_projected) + (cf_head_egt_projected)) + ((cf_head_egt_projected) + (cf_head_egt_projected)))) + ((((cf_new_b_egt_projected) + (cf_head_egt_projected)) * S ((cf_new_b_egt_projected) + (cf_head_egt_projected)) + ((cf_head_egt_projected) + (cf_head_egt_projected))) + (((cf_new_b_egt_projected) + (cf_head_egt_projected)) * S ((cf_new_b_egt_projected) + (cf_head_egt_projected)) + ((cf_head_egt_projected) + (cf_head_egt_projected))))))) /\ (cf_new_b_egt_projected = cf_old_a_egt_projected /\ (cf_new_a_egt_projected = cf_new_b_egt_projected * cf_quotient_egt_projected + cf_old_b_egt_projected /\ ((exists ff_lt_cf_egt_projected_remainder. ff_lt_cf_egt_projected_remainder + S cf_old_b_egt_projected = cf_new_b_egt_projected) /\ (cf_head_egt_projected = S ((cf_quotient_egt_projected + cf_tail_egt_projected) * S (cf_quotient_egt_projected + cf_tail_egt_projected) + (cf_tail_egt_projected + cf_tail_egt_projected))))))))))) /\ (((exists ff_h_cf_egt_projected_state. ff_h_cf_egt_projected_state + S (((g) + (((0) + (0)) * S ((0) + (0)) + ((0) + (0)))) * S ((g) + (((0) + (0)) * S ((0) + (0)) + ((0) + (0)))) + ((((0) + (0)) * S ((0) + (0)) + ((0) + (0))) + (((0) + (0)) * S ((0) + (0)) + ((0) + (0))))) = S ((S (0)) * e)) /\ exists ff_q_cf_egt_projected_state. h = ff_q_cf_egt_projected_state * S ((S (0)) * e) + (((g) + (((0) + (0)) * S ((0) + (0)) + ((0) + (0)))) * S ((g) + (((0) + (0)) * S ((0) + (0)) + ((0) + (0)))) + ((((0) + (0)) * S ((0) + (0)) + ((0) + (0))) + (((0) + (0)) * S ((0) + (0)) + ((0) + (0))))))))Constructive proof overview
Generated structural guide
Every anchored execution contains an actual complete beta history whose zeroth state encodes precisely the reported gcd value.
The unchanged tactic script uses 0 declared prerequisites and contains 16 exact native proof lines.
Alpha v34 checked-use · first admitted v22 · 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 assumptionsL1–5
02Separate the logical casesL6–10
03Construct an explicit witnessL11–13
04Separate the logical casesL14–14
Follow the explicit conjunction, disjunction, witness, or contradiction step recorded below.
- L14
split
Original exact command ledger · 16 lines
- 0001
intro a - 0002
intro b - 0003
intro g - 0004
intro l - 0005
intro hanchored - 0006
cases hanchored - 0007
cases hanchored_witness - 0008
cases hanchored_witness_witness - 0009
cases hanchored_witness_witness_witness - 0010
cases hanchored_witness_witness_witness_right - 0011
exists x - 0012
exists x1 - 0013
exists x2 - 0014
split - 0015
exact hanchored_witness_witness_witness_left - 0016
exact hanchored_witness_witness_witness_right_left