# Index

Z particle

mass of, 1046

and number of neutrinos, 1047

Z transforms

and spectra of substitution systems, 1081

Zebras

correlation of two sides of, 1014

pigmentation patterns of, 426

stripes as camouflage for, 1012

stripes on as discrete, 337

Zeckendorff representation, 892, 1070

Zener diodes

as source of randomness, 970

Zeno's paradox

and discrete space, 1027

Zermelo, Ernst F. F. (Germany, 1871–1953)

and set theory, 1154

Zermelo-Fraenkel set theory, 1154

Zero equivalence

undecidability of, 1138

Zero-point fluctuations, 1062

and model of electron, 1044

and notion of ether, 1042

and uniform spectra, 988

Zeros

of sine functions, 917

of zeta function, 918

Zeta (Riemann zeta function), 148, 909

and density of relative primes, 1093

difficulty of evaluating, 1134

and distribution of primes, 909

and Feynman diagrams, 1060

from rational integrals, 916

as special function, 1092

Zeta functions

for periodic points, 959

ZF (Zermelo-Fraenkel set theory), 1154

ZFC (standard set theory), 1154

Zhabotinsky, Anatol M. (Russia/USA, 1938– )

and oscillatory chemical reactions, 1013

Ziggurats

rules for building, 874

Zipf, George K. (USA, 1902–1950)

and Zipf's law, 1014

Zipf's law, 1014

Zippers

characteristic shapes of, 1183

Ziv, Jacob (Israel, 1931– )

and data compression, 1069

Zuse, Konrad (Germany, 1910–1995)

and universe as CA, 1026

Zygmund series, 918