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

PG0002 · prime_field_polynomial_shift_boundedPG0003 · prime_field_polynomial_shift_functionalPG0004 · prime_field_polynomial_shift_zero_prefixPG0005 · polynomial_zero_extended_shift_forwardPG0010 · beta_sum_pointwise_mod_scalePG0017 · prime_field_polynomial_convolution_right_scale_existsPG001A · prime_field_polynomial_append_shift_constant_addPG001B · prime_field_polynomial_append_shift_constant_decomposition_existsPG001C · prime_field_convolution_coefficient_right_append_addPG001D · prime_field_polynomial_shift_scale_aligned_sum_existsPG001F · prime_field_polynomial_convolution_right_append_existsPG0023 · prime_field_polynomial_convolution_associativity_append_stepPG002D · polynomial_diagonal_left_unit_first_termPG002E · polynomial_diagonal_left_unit_tail_termPG002F · polynomial_diagonal_left_unit_natural_sumPG0030 · prime_field_convolution_coefficient_left_unitPG004D · polynomial_diagonal_left_constant_first_termPG004E · polynomial_diagonal_left_constant_natural_sumPG004F · prime_field_convolution_coefficient_left_constantPG0050 · prime_field_polynomial_left_constant_product_to_scalePG0052 · prime_field_polynomial_left_constant_product_existsPG0053 · prime_field_polynomial_division_remainder_length_descentPG0054 · prime_field_polynomial_division_constant_remainder_emptyPG0069 · prime_field_polynomial_gcd_bezout_exists_up_toPG006D · prime_field_polynomial_nonzero_leading_equivalent_length_boundPG006F · prime_field_polynomial_product_equivalent_nonzero_left_nonempty