ND0083

SignedDerivativeUnit(p,dp,dn)

An actual bounded inverse of dp−dn modulo p, expressed by balanced congruence.

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. Exact original first-admission records.

Definition in prerequisite notation

∃ sph_inverse_secondwave. Lt(sph_inverse_secondwave,p)ModEq(p,dp · sph_inverse_secondwave,1 + dn · sph_inverse_secondwave)

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

Hygienic expanded first-order definition
exists sph_inverse_secondwave. ((exists hpl_gap_secondwave. hpl_gap_secondwave + S (sph_inverse_secondwave) = (p)) /\ (exists hgcrt_mod_left_hpl_secondwave hgcrt_mod_right_hpl_secondwave. (dp * sph_inverse_secondwave) + p * hgcrt_mod_left_hpl_secondwave = (1 + dn * sph_inverse_secondwave) + p * hgcrt_mod_right_hpl_secondwave))

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