New PDF release: A Visual Introduction to the Fourth Dimension (Rectangular

Geometry Topology

By Chris McMullen

This colourful, visible creation to the fourth measurement presents a transparent clarification of the techniques and diverse illustrations. it's written with a marginally of character that makes this an interesting learn rather than a dry math textual content. The content material is especially obtainable, but while unique sufficient to fulfill the pursuits of complicated readers. This publication is dedicated to geometry; there are not any religious or spiritual elements to this ebook. could you get pleasure from your trip into the interesting international of the fourth dimension!


  • Introduction
  • Chapter zero: what's a Dimension?
  • Chapter 1: Dimensions 0 and One
  • Chapter 2: the second one Dimension
  • Chapter three: third-dimensional Space
  • Chapter four: A Fourth measurement of Space
  • Chapter five: Tesseracts and Hypercubes
  • Chapter 6: Hypercube Patterns
  • Chapter 7: Planes and Hyperplanes
  • Chapter eight: Tesseracts in Perspective
  • Chapter nine: Rotations in 4D Space
  • Chapter 10: Unfolding a Tesseract
  • Chapter eleven: move Sections of a Tesseract
  • Chapter 12: dwelling in a 4D House
  • Further Reading
  • Glossary
  • About the Author

Put in your spacesuit, strap in your protection harness, swallow your anti-nausea medication, and revel in this trip right into a fourth size of house! 10D, 9D, 8D, 7D, 6D, 5D, 4D, 3D, second, 1D, 0D. Blast off!

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Additional info for A Visual Introduction to the Fourth Dimension (Rectangular 4D Geometry)

Sample text

A tesseract has 16 corners. So the answer is 16 bananas (corners). You can find 8 of the 16 corners labeled in the figure below. What about the other 8? Not to worry: The second figure that follows has all 16 labeled. If your e-reader respects page breaks, you'll find the following figure on the next page (so that if you have a large screen, the figure with the answer won't spoil the puzzle for you). As promised, the next figure has all 16 corners labeled. They are labeled A thru P. Here is another way to deduce that a tesseract (full of monkeys) has 16 corners.

Here comes the explanation. ) and the cube to go by. So we better study the cube carefully. A cube is bounded by 6 square faces. There are 3 pairs of planes. The planes are xy, yz, and zx. You might think of the 2 xy planes as top and bottom, the 2 yz planes as front and back, and the 2 zx planes as left and right. In 4D space, there are 6 types of planes: xy, yz, zx, xw, wy, and zw. In order to complete our solution, we just need to figure how many of each kind there are. The pattern is actually similar to the patterns for corners and edges.

We often draw a cube the way it actually is (rather than how it appears), with 3 sets of 4 parallel edges. However, when you look at an actual cube in 3D space, some of the edges don't look parallel, but seem to intersect at a distant point (because the back side of the cube is further from your eye than the front). This effect is called perspective. For comparison, let's begin by drawing a cube the way it actually is, instead of the way that it appears. The cube below is not shown in perspective.

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