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.
Hygienic expanded first-order definition
forall ff_i_defined_all_bits. (exists ff_lt_defined_all_bits_bound. ff_lt_defined_all_bits_bound + S ff_i_defined_all_bits = l) -> exists ff_bit_defined_all_bits. ((((exists ff_h_defined_all_bits_decoded. ff_h_defined_all_bits_decoded + S (ff_bit_defined_all_bits) = S ((S (ff_i_defined_all_bits)) * c)) /\ exists ff_q_defined_all_bits_decoded. b = ff_q_defined_all_bits_decoded * S ((S (ff_i_defined_all_bits)) * c) + (ff_bit_defined_all_bits))) /\ (ff_bit_defined_all_bits = 0 \/ ff_bit_defined_all_bits = 1))
The unchanged native kernel never receives this surface symbol. Binder-safe expansion produces only its existing first-order syntax.
Direct definition dependencies
Definitions depending on this notation
Checked theorems using this definition
Separate complete second-wave branches: Full T13 proof · Alpha v27.