Hyperbolic Games 4+
Jeff Weeks
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- 免费
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简介
The Hyperbolic Games are similar in spirit to the Torus Games, but played on curved surfaces. Most people will want to start with the Torus Games instead, which offer a selection of easily playable games, designed for children ages 10 and up, all implemented in multi-connected spaces in 2 and 3 dimensions.
The Hyperbolic Games, by contrast, are for math students — advanced undergraduates and beginning graduate students. These games are more challenging than the Torus Games because they combine a multi-connected topology with a non-Euclidean geometry. Mathematically they illustrate the following:
- The hyperbolic plane, as a live scrollable object.
- The under-appreciated fact that the two traditional models of the hyperbolic plane are simply different views of the same fixed-radius surface in Minkowski space: the Beltrami-Klein model corresponds to a viewpoint at the origin (central projection) while the Poincaré disk model corresponds to a viewpoint one radian further back (stereographic projection). Players may pinch-to-zoom to pass from one to the other, or stop to view the model from any other distance.
- The strong — but also under-appreciated — correspondence between the hyperbolic plane and an ordinary sphere. In particular, central projection of the sphere corresponds to the Beltrami-Klein model of the hyperbolic plane, and stereographic projection of the sphere corresponds to the Poincaré disk model of the hyperbolic plane.
- The Klein quartic surface, viewed with its natural geometry. The sudoku puzzles take full advantage of the Klein quartic’s tremendous amount of symmetry.
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版本 2.1.4
Supports Wide Color displays
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信息
- 提供者
- Jeff Weeks
- 大小
- 2.9 MB
- 类別
- 教育
- 兼容性
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- iPhone
- 设备需装有 iOS 12.0 或更高版本。
- iPad
- 设备需装有 iPadOS 12.0 或更高版本。
- iPod touch
- 设备需装有 iOS 12.0 或更高版本。
- 语言
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英语
- 年龄分级
- 4+
- Copyright
- © 2020 Jeff Weeks
- 价格
- 免费