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Canonical Key
lommel_s_normalized
Parameter Space
muR (real)

Image domain \(f(\mathbb{D})\)

The image of the unit disk under \(f\): concentric circles \(|z|=r\) and radial spokes mapped through \(f(z)=z+a_2z^2+\dots\); the bold curve is the boundary \(f(e^{i\theta})\). Rendered in your browser from the certified Taylor coefficients - nothing is computed server-side.

mu=1, nu=0.5
mu=1, nu=0.5 mu=10, nu=0.5
Taylor series
r* ≈ 0.000
Radius of starlikeness r* ≈ 0.0000
disproven f is starlike on |z| < r*; the colored disk shows the certified region.

Unit disk explorer - hover to evaluate

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Related

Facts (23)

Property Kind Params Holds Value / r Status Confidence
K membership {"mu": 1, "nu": 0.5} -628.0119 unscreened -
K membership {"mu": 2, "nu": 0.5} -335.1167 unscreened -
K membership {"mu": 3, "nu": 0.5} -76.8767 unscreened -
r* radius {"mu": 1, "nu": 0.5} - r ≤ 0.960 🔬 screened numerical_strong
r* radius {"mu": 2, "nu": 0.5} - r ≤ 0.960 🔬 screened numerical_strong
r* radius {"mu": 3, "nu": 0.5} - r ≤ 0.960 🔬 screened numerical_strong
S* membership {"mu": 10, "nu": 0.5} r ≤ 0.000 ✗ disproven proven
S* membership {"mu": 9, "nu": 0.5} r ≤ 0.000 ✗ disproven proven
S* membership {"mu": 7.5, "nu": 0.5} r ≤ 0.000 ✗ disproven proven
S* membership {"mu": 6.5, "nu": 0.5} r ≤ 0.000 ✗ disproven proven
S* membership {"mu": 5.5, "nu": 0.5} r ≤ 0.000 ✗ disproven proven
S* membership {"mu": 4.5, "nu": 0.5} r ≤ 0.000 ✗ disproven proven
S* membership {"mu": 8, "nu": 0.5} r ≤ 0.000 ✗ disproven proven
S* membership {"mu": 7, "nu": 0.5} r ≤ 0.000 ✗ disproven proven
S* membership {"mu": 6, "nu": 0.5} r ≤ 0.000 ✗ disproven proven
S* membership {"mu": 5, "nu": 0.5} r ≤ 0.000 ✗ disproven proven
S* membership {"mu": 4, "nu": 0.5} r ≤ 0.000 ✗ disproven proven
S* membership {"mu": 1, "nu": 0.5} r ≤ 0.000 ✗ disproven proven
S* membership {"mu": 2, "nu": 0.5} r ≤ 0.000 ✗ disproven proven
S* membership {"mu": 3, "nu": 0.5} r ≤ 0.000 ✗ disproven proven
S membership {"mu": 1, "nu": 0.5} - unscreened -
S membership {"mu": 2, "nu": 0.5} - unscreened -
S membership {"mu": 3, "nu": 0.5} - unscreened -

Verification Runs (36)

Verifier Property Direction Outcome Domain r Witness Engine
boundary_scan_centered_v31 starlike disproves pass 0.000 - boundary_v3.1
boundary_scan_centered_v31 starlike disproves pass 0.000 - boundary_v3.1
boundary_scan_centered_v31 starlike disproves pass 0.000 - boundary_v3.1
boundary_scan_centered_v31 starlike disproves pass 0.000 - boundary_v3.1
boundary_scan_centered_v31 starlike disproves pass 0.000 - boundary_v3.1
boundary_scan_centered_v31 starlike disproves pass 0.000 - boundary_v3.1
boundary_scan_centered_v31 starlike disproves pass 0.000 - boundary_v3.1
boundary_scan_centered_v31 starlike disproves pass 0.000 - boundary_v3.1
boundary_scan_centered_v31 starlike disproves pass 0.000 - boundary_v3.1
boundary_scan_centered_v31 starlike disproves pass 0.000 - boundary_v3.1
boundary_scan_centered_v31 starlike disproves pass 0.000 - boundary_v3.1
boundary_scan_centered_v31 starlike disproves pass 0.000 - boundary_v3.1
boundary_scan_centered_v31 starlike disproves pass 0.000 - boundary_v3.1
boundary_scan_centered_v31 starlike disproves pass 0.000 - boundary_v3.1
pointwise_starlike_iv starlike disproves pass 0.311 [-0.20788032367299988, 0.230874489057977] gft-0.1.0-reaudit-20260610
pointwise_starlike_iv starlike disproves pass 0.279 [0.2508315149377759, 0.12233870407449797] gft-0.1.0-reaudit-20260610
pointwise_starlike_iv starlike disproves pass 0.247 [0.22243264423118037, 0.10848764935242292] gft-0.1.0-reaudit-20260610
pointwise_starlike_iv starlike disproves pass 0.224 [0.20113349120123372, 0.09809935831086664] gft-0.1.0-reaudit-20260610
pointwise_starlike_iv starlike disproves pass 0.208 [-0.07791187552137667, 0.19283865882796628] gft-0.1.0-reaudit-20260610
pointwise_starlike_iv starlike disproves pass 0.484 [0.2274372739042572, 0.42774730023795904] gft-0.1.0-reaudit-20260610
pointwise_starlike_iv starlike disproves pass 0.398 [-0.3915231495378786, 0.06903609483548294] gft-0.1.0-reaudit-20260610
pointwise_starlike_iv starlike disproves pass 0.350 [-0.344848227462342, -0.06080604675110077] gft-0.1.0-reaudit-20260610
boundary_scan_polynomial starlike proves pass 0.000 - boundary_v3.0
boundary_scan_polynomial starlike proves pass 0.000 - boundary_v3.0
boundary_scan_polynomial starlike proves pass 0.000 - boundary_v3.0
boundary_scan_polynomial starlike proves pass 0.000 - boundary_v3.0
boundary_scan_polynomial starlike proves pass 0.000 - boundary_v3.0
boundary_scan_polynomial starlike proves pass 0.000 - boundary_v3.0
boundary_scan_polynomial starlike proves pass 0.000 - boundary_v3.0
boundary_scan_polynomial starlike proves pass 0.000 - boundary_v3.0
boundary_scan_polynomial starlike proves pass 0.000 - boundary_v3.0
boundary_scan_polynomial starlike proves pass 0.000 - boundary_v3.0
boundary_scan_polynomial starlike disproves pass 0.000 0.3*exp(i*2.304614) boundary_v3.0
boundary_scan_polynomial starlike proves pass 0.999 - boundary_v3.0
boundary_scan_polynomial starlike proves pass 0.999 - boundary_v3.0
boundary_scan_polynomial starlike proves pass 0.999 - boundary_v3.0

Parameter Sweep (36 verified instances, starlikeness × disk radius vs parameter)

Proven on full disk (r ≥ 0.999)   ·   Proven on partial disk   ·   Disproven (witness)

Instances (14)

{"mu": 1, "nu": 0.5} {"mu": 2, "nu": 0.5} {"mu": 3, "nu": 0.5} {"mu": 4, "nu": 0.5} {"mu": 5, "nu": 0.5} {"mu": 6, "nu": 0.5} {"mu": 7, "nu": 0.5} {"mu": 8, "nu": 0.5} {"mu": 4.5, "nu": 0.5} {"mu": 5.5, "nu": 0.5} {"mu": 6.5, "nu": 0.5} {"mu": 7.5, "nu": 0.5} {"mu": 9, "nu": 0.5} {"mu": 10, "nu": 0.5}

Cited in Papers (5)

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