CONTENTS Introduction ... ⅸ Blake and Fractals / J. D. MEMORY ... 1 1 On Continuous Function of a Real Argument that do not have a Well-Defined Differential Quotient (1872) / KARL WEIERSTRASS ... 3 2 On the Power of Perfect Sets of Points (1884) / GEORG CANTOR ... 11 3 On a Continuous Curve without Tangent Constructible from Elementary Geometry (1904) / HELGE VON KOCH ... 25 4 On the Linear Measure of Point Sets-a Generalization of the Concept of Length (1914) / CONSTANTIN CARATH E ´ ODORY ... 47 5 Dimension and Outer Measure (1918) / FELIX HAUSDORFF ... 75 6 General Spaces and Cartesian Spaces (1926) / KARL MENGER ... 103 7 Improper Sets and Dimension Numbers (excerpt) / GEORGES BOULIGAND ... 118 8 On a Metric Property of Dimension (1932) / L. PONTRJAGIN ; L. SCHNIRELMANN ... 133 9 On the Sum of Digits of Real Numbers Represented in the Dyadic System (1934) / A. S. BESICOVITCH ... 145 10 On Rational Approximations to Real Numbers (1934) / A. S. BESICOVITCH ... 161 11 On Dimensional Numbers of Some Continuous Curves (1937) / A. S. BESICOVITCH ; H. D. URSELL ... 171 12 Plane or Space Curves and Surfaces Consisting of Parts Similar to the Whole (1938) / PAUL L E ´ VY ... 181 13 Additive Functions of Intervals and Hausdorff Measure (1946) / P. A. P. MORAN ... 241 14 The Dimension of Cartesian Product Sets (1954) / J. M. MARSTRAND ... 259 15 On the Complementary Intervals of a Linear Closed Set of Zero Lebesgue Measure (1954) / A. S. BESICOVITCH ; S. J. TAYLOR ... 269 16 On Some Curves Defined by Functional Equations (1957) / GEORGES DE RHAM ... 285 17 ε-Entropy and ε-Capacity of Sets in Functional Spaces (exerpt) / A. N. KOLMOGOROV ; V. M. TIHOMIROV ... 299 18 A Simple Example of a Function which is Everywhere Continuous and Nowhere Differentiable (1966) / KARL KIESSWETTER ... 341 19 How Long is the Coast of Britain? Statistical Self-Similarity and Fractional Dimension (1967) / BENOIT MANDELBROT ... 351 Index ... 359 Permissions and Acknowledgments ... 363