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.
Readable signature
Even(n)Exact expansion
exists h. n = 2 * hThis node is conservative notation, not a theorem, axiom, predicate constant, or kernel rule. Its expansion remains in the unchanged first-order language.
Definition neighborhood
Depends on conservative definitions
none
Used by conservative definitions
All transitive conservative prerequisites
none
Used by theorem statements or local proof propositions
PF0005 pythagorean_euclidean_even_leg PF000H pythagorean_parameter_even_square PF000J pythagorean_even_odd_square_gap_odd PF000K pythagorean_odd_even_square_gap_odd PF000N pythagorean_odd_coordinate_coprime_two PF000Z pythagorean_primitive_legs_not_both_even PF0013 pythagorean_coordinate_parity_choice PF0014 pythagorean_primitive_legs_opposite_parity PF0015 pythagorean_odd_square_has_odd_root PF001P pythagorean_even_square_has_even_root PF001V pythagorean_odd_even_half_factors PF001X pythagorean_primitive_odd_even_inverse PF002C fermat_four_even_square_root PF002E fermat_four_odd_double_square_factors PF002K fermat_four_primitive_odd_even_descentGrand-campaign planning vocabulary
Locate Even in the global campaign vocabulary →
Reviewed Even corresponds to blueprint Even with checked argument positions [0].
The global atlas describes planning vocabulary and does not itself certify a definition or theorem. The reviewed expansion and conservative dependency DAG on this page are the actual family-local reading definitions.