No prose has been written for this declaration yet. The Lean source and graph data below render
without it.
generate prose now
formal statement (Lean)
1459theorem deficient_two : sigma 1 2 < 2 * 2 := by native_decide
proof body
Term-mode proof.
1460
1461/-- 3 is deficient: σ_1(3) = 4 < 6. -/
depends on (6)
Lean names referenced from this declaration's body.
-
sigma
in IndisputableMonolith.Decision.AbileneParadox
decl_use
-
is
in IndisputableMonolith.Foundation.OptionAEmpiricalProgram
decl_use
-
is
in IndisputableMonolith.Foundation.SimplicialLedger.EdgeLengthFromPsi
decl_use
-
is
in IndisputableMonolith.GameTheory.MechanismDesignFromSigma
decl_use
-
is
in IndisputableMonolith.Mathematics.RamanujanBridge.MockThetaPhantom
decl_use
-
sigma
in IndisputableMonolith.NumberTheory.Primes.ArithmeticFunctions
decl_use