PD0051 · conservative definition

FloorSqrt

s is the integer floor square root: s² ≤ n < (s+1)².

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

FloorSqrt(n, s)

Exact expansion

((exists bcs_sqrt_lower_gap_bertrand_defined_floor_sqrt. bcs_sqrt_lower_gap_bertrand_defined_floor_sqrt + (s) * (s) = (n)) /\ exists bcs_sqrt_upper_gap_bertrand_defined_floor_sqrt. bcs_sqrt_upper_gap_bertrand_defined_floor_sqrt + S (n) = S (s) * S (s))

This 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

Used by conservative definitions

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All transitive conservative prerequisites

Used by theorem statements or local proof propositions

Grand-campaign planning vocabulary

Locate FloorSqrt in the global campaign vocabulary →

Reviewed FloorSqrt corresponds to blueprint FloorSqrt with checked argument positions [0, 1].

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.