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)
1468theorem deficient_five : sigma 1 5 < 2 * 5 := by native_decide
proof body
Term-mode proof.
1469
1470/-- 7 is deficient: σ_1(7) = 8 < 14. -/
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