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Canonical Key
z
Closed Form
f(z) = z

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.

Taylor series

Unit disk explorer - hover to evaluate

Hover over the disk

Related

Univalence Criteria

Schwarzian ladder estimate ||S(f)||
0.000
Screen only; univalence is inconclusive
Pre-Schwarzian ladder estimate ||T(f)||
0.000
Screen only; univalence is inconclusive

Facts (8)

Property Kind Params Holds Value / r Status Confidence
B membership {} - 0.0000 retracted -
K membership {} ✓ 1.0000 🔬 screened numerical_strong
N membership {} - 0.0000 retracted -
||T(f)|| bound {} - 0.0000 retracted -
r* radius {} - r ≤ 0.920 🔬 screened numerical_strong
||S(f)|| bound {} - 0.0000 retracted -
S* membership {} - 1.0000 retracted -
S membership {} ✓ - 🔬 screened numerical_strong

Verification Runs (2)

Verifier Property Direction Outcome Domain r Witness Engine
boundary_scan_centered_v31 starlike proves pass 0.999 - boundary_v3.1
boundary_scan_closed_form starlike proves pass 0.999 - boundary_v3.0

Instances (1)

{}
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