124 Index
classical, 3
contraction of, 7, see also contraction
counting, 8, 9, 13, 19
crisscross, 2, 115
dense, 4
dense open, 55
devil, 63
European, 6
exploded, 87
irreducible, 88
reducible, 88
framed, 50
hybrid, 86
iceskater, 6
ladder, 6
length of, 2
loose, 2
multi-loop, 56, 111
one-column, 7
open, 16
oriented, 8
open, 55
open zigzag, 55, 111
oriented, 8, 21
reduced, 31
Roman, 111
serpent, 2
contraction of, 7
shoe shop, 6
simple, 5
simple exploded, 61
skew-bowtie, 49
spiral, 6
star, 2
contraction of, 7
straight, 4, 6
contraction of, 7
soft, 39
straight devil, 68
superstraight, 4
existence of, 5
zigsag, 2
zigzag, 2
contraction of, 7
open, 55, 111
LA Gear, 114
length
of a general cross, 36
of a lacing, 2
lower bound of, 45
of a split partition, 11
vertical
of a lacing, 71
of a segment, 2
lightning, 51
loop, 56
Mathematica, 26
Misiurewicz, M., 6, 29, 47
Oxford, 112
lacing of, 113
partition
split, 11
problem
foot, 116
longest shoelace, 59
one-column, 9
shortest shoelace, 29
one-column, 9
strongest shoelace, 83
traveling salesman, 107
weakest shoelace, 101
pulley sum, 83
RSolve, 26
rule
lengthening
straight-cross, 62
shortening, 44, 108
cross-straight, 53
of signs, 97, 99
strengthening, 87
Schulz, C., 117
segment, 1
shoe
bottom part of, 10, 12
classical (linear), 48
contracted, 74
general, 53
linear, 47
mathematical, 1
real, 99, footnotes on pages 29, 85
semi-classical, 48
top part of, 10, 12, 72
shoelace
books, 118
fashion, 114
formula, 109
history, 111
knot, 118
superstition, 112
spectrum, 43
Star of David, 3
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