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ftp://ftp.math.ac.cn/pub/Dimensions/Dimensions_2_English.zip
ftp://ftp.math.ac.cn/pub/Dimensions/Dimensions_3_English.zip
ftp://ftp.math.ac.cn/pub/Dimensions/Dimensions_4_English.zip
ftp://ftp.math.ac.cn/pub/Dimensions/Dimensions_5_English.zip
ftp://ftp.math.ac.cn/pub/Dimensions/Dimensions_6_English.zip
ftp://ftp.math.ac.cn/pub/Dimensions/Dimensions_7_English.zip
ftp://ftp.math.ac.cn/pub/Dimensions/Dimensions_8_English.zip
ftp://ftp.math.ac.cn/pub/Dimensions/Dimensions_9_English.zip
ftp://ftp.math.ac.cn/pub/Dimensions/Dimensions_TR_English.zip

Chapter 1 Dimension two Hipparchus shows us how to describe the position of any point on Earth with two numbers...

		...and explains the stereographic projection : how to draw a map of the world.

Chapter 2 Dimension three M.C. Escher talks about the adventures of two-dimensional creatures trying to imagine what three-dimensional objects look like.

		Chapters 3 and 4 The fourth dimension Mathematician Ludwig Schläfli talks about objects that live in the fourth dimension...

..and shows a parade of four-dimensional polytopes, strange objects with 24, 120 and even 600 faces !

		Chapters 5 and 6 Complex numbers Mathematician Adrien Douady explains complex numbers. The square root of negative numbers made easy !

Transforming the plane, deforming images, creating fractal images...

		Chapters 7 and 8 Fibration Mathematician Heinz Hopf explains his "fibration". Using complex numbers he constructs pretty patterns of circles in space.

Circles, tori... everything rotating in four-dimensional space.

Chapter 9 Proof Mathematician Bernhard Riemann explains the importance of proofs in mathematics. He proves a theorem concerning the stereographic projection