Contents
Preface
Part 1. Properties of quasidisks
Chapter 1. Preliminaries
1.1. Quasiconformal mappings
1.2. Modulus of a curve family
1.3. Modulus estimates
1.4. Quasidisks
1.5. What is ahead
Chapter 2. Geometric properties
2.1. Reflection
2.2. The three-point condition
2.3. Reversed triangle inequality
2.4. Linear local connectivity
2.5. Decomposition
Chapter 3. Conformal invariants
3.1. Conformal invariants in a Jordan domain
3.2. Hyperbolic geometry
3.3. Bounds for hyperbolic distance
3.4. Geometry of hyperbolic segments
3.5. Uniform domains
3.6. Min-max property of hyperbolic segments
3.7. Harmonic measure
3.8. Harmonic quasisymmetry
3.9. Harmonic bending
3.10. Quadrilaterals
3.11. Extremal distance property
3.12. Quadrilaterals and harmonic quasisymmetry
Chapter 4. Injectivity criteria
4.1. Meromorphic functions
4.2. Locally bilipschitz mappings
4.3. Locally quasiconformal mappings
4.4. Jacobian of a conformal mapping
Chapter 5. Criteria for extension
5.1. Functions of bounded mean oscillation
5.2. Sobolev and finite energy functions
vii
xi
1
3
3
6
7
12
16
19
19
22
25
27
30
33
33
34
35
39
39
41
42
43
46
46
50
52
59
59
62
64
67
69
69
71