List of Figures
3.1 Replacing f : S C by f1 : S C with one less subarc of nonzero
variation. 22
3.2 Bell’s Lollipop. 24
3.3 var(f, A) = −1 + 1 1 = −1. 27
4.1 Maximal balls have disjoint hulls. 36
6.1 The strip S from Lemma 6.1.2 56
6.2 Uniqueness of the negative outchannel. 60
7.1 Replacing the links [an(1)−1, an(1)], . . ., [am(1)−1, am(1)] by a single link
[an(1)−1, am(1)]. 73
7.2 Illustration to the proof of Theorem 7.4.7. 78
7.3 Illustration to the proof of Lemma 7.4.9. 83
7.4 A general puzzle-piece 86
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