PD0002

Lt(a,b)

Witness-defined strict order on natural numbers.

Conservative notation; not a theorem, primitive, or axiom.

Current library: Alpha v34, 4,223 checked-use theorems; Stable remains 432. Historical first admissions, original proof editions, and non-admitted aliases are preserved.

Definition in prerequisite notation

S a ≤ b

Only definitions earlier in this acyclic notation graph are used here.

Hygienic expanded first-order definition
exists h. h + S a = b

The unchanged native kernel never receives this surface symbol. Binder-safe expansion produces only its existing first-order syntax.

Direct definition dependencies

none — first-order arithmetic only

Definitions depending on this notation

Checked theorems using this definition

PQ0001 · prime_field_subtract_existsPQ0004 · prime_field_polynomial_negate_existsPQ0005 · prime_field_polynomial_negate_entryPQ0007 · prime_field_polynomial_negate_functionalPQ0008 · prime_field_polynomial_negate_transportPQ000D · prime_field_polynomial_subtract_existsPQ000E · prime_field_polynomial_subtract_entryPQ0010 · prime_field_polynomial_subtract_functionalPQ0011 · prime_field_polynomial_subtract_transportPQ0017 · prime_field_polynomial_subtract_equal_entry_zeroPQ0018 · prime_field_polynomial_subtract_equal_zeroPQ0019 · prime_field_polynomial_subtract_add_cancelPQ001A · prime_field_polynomial_subtract_common_right_cancelPQ001C · prime_field_polynomial_suffix_entryPQ001D · prime_field_polynomial_suffix_boundedPQ001E · prime_field_polynomial_suffix_equalPQ001F · prime_field_polynomial_leading_zero_cut_existsPQ0027 · prime_field_polynomial_trim_empty_of_zeroPQ0029 · prime_field_polynomial_trim_removed_lePQ002C · prime_field_polynomial_trim_output_equalPQ002D · prime_field_polynomial_trim_exists_uniquePQ0033 · prime_field_polynomial_monic_transportPQ0037 · prime_field_polynomial_monic_normalization_entryPQ0038 · prime_field_polynomial_monic_normalization_boundedPQ0039 · prime_field_polynomial_monic_normalization_leadingPQ003A · prime_field_polynomial_monic_normalization_monicPQ003C · prime_field_polynomial_monic_normalization_existsPQ003E · prime_field_polynomial_monic_normalization_functionalPQ003F · prime_field_polynomial_monic_normalization_value_functionalPQ0040 · prime_field_polynomial_monic_normalization_transportPQ0043 · prime_field_polynomial_monic_normalization_exists_uniquePQ0046 · prime_field_polynomial_horner_trace_state_boundedPQ0047 · prime_field_polynomial_synthetic_existsPQ0049 · prime_field_polynomial_synthetic_quotient_entryPQ004B · prime_field_polynomial_synthetic_remainder_boundedPQ004C · prime_field_polynomial_synthetic_functionalPQ004D · prime_field_polynomial_horner_constant_valuePQ0050 · prime_field_polynomial_synthetic_middle_coefficientsPQ0054 · prime_field_polynomial_synthetic_exists_unique