20
An Introduction to Hyperbolic Geometry By Amber Case Cyborg Anthropologist Ignite Portland 8 Twitter: @caseorganic

Introduction to Hyperbolic Geometry by Amber Case | Ignite Portland 8

Embed Size (px)

DESCRIPTION

Traditional geometry is something we all learned in school. Some of us like it, and the rest of us didn't. In traditional geometry, parallel lines stay parallel, and triangles are always 180 degrees. Theses are the rules, and they cannot be broken. Enter Hyperbolic Geometry. It's not new, but it is an AWESOME field of mathematics. Basically, it breaks all the rules. In this presentation, I demonstrate some of the history and implications of this field, a field that has inspired Escher and sent Euclid rolling in his grave. I also explain the mysterious 5th Postulate and how all of this applies to the web. Sound complicated? Don't panic! I'll use a lot of pictures and analogies. And with all of the beer you'll all be consuming, the ideas should enter your brain smoothly and enjoyable. This won't hurt a bit. ---- Amber Case is a Cyborg Anthropologist studying the interaction between humans and computers and how technology affects culture. She consults with a number of large and small companies on extending online presence. In her free time, she does independent research and has exceedingly long conversations. Case gave her first lecture on Hyperbolic Geometry to her mathematics class at age 14. She hasn't given one since, but uses the mathematics all the time.

Citation preview

Page 1: Introduction to Hyperbolic Geometry by Amber Case | Ignite Portland 8

An Introduction to Hyperbolic Geometry

By Amber CaseCyborg Anthropologist

Ignite Portland 8Twitter: @caseorganic

Page 2: Introduction to Hyperbolic Geometry by Amber Case | Ignite Portland 8

M. C. Escher

Page 3: Introduction to Hyperbolic Geometry by Amber Case | Ignite Portland 8

Euclid, 300 B. C.

Once upon a time…

Page 4: Introduction to Hyperbolic Geometry by Amber Case | Ignite Portland 8

5 Postulates

Page 5: Introduction to Hyperbolic Geometry by Amber Case | Ignite Portland 8

The 5th Postulate…

Page 6: Introduction to Hyperbolic Geometry by Amber Case | Ignite Portland 8

János Bolyai

Page 7: Introduction to Hyperbolic Geometry by Amber Case | Ignite Portland 8

v

Lobachevsky Gauss Klein

Page 8: Introduction to Hyperbolic Geometry by Amber Case | Ignite Portland 8

ALWAYS 180°!

Less than 180°!

Page 9: Introduction to Hyperbolic Geometry by Amber Case | Ignite Portland 8

The Spherical Triangle!

270°!

Page 10: Introduction to Hyperbolic Geometry by Amber Case | Ignite Portland 8

Riemann

HyperbolicManifolds

Page 11: Introduction to Hyperbolic Geometry by Amber Case | Ignite Portland 8
Page 12: Introduction to Hyperbolic Geometry by Amber Case | Ignite Portland 8

1997: Daina Taimina, Cornell

Page 13: Introduction to Hyperbolic Geometry by Amber Case | Ignite Portland 8
Page 14: Introduction to Hyperbolic Geometry by Amber Case | Ignite Portland 8
Page 15: Introduction to Hyperbolic Geometry by Amber Case | Ignite Portland 8

Ancient City Model

Page 16: Introduction to Hyperbolic Geometry by Amber Case | Ignite Portland 8

Present Day

Page 17: Introduction to Hyperbolic Geometry by Amber Case | Ignite Portland 8
Page 18: Introduction to Hyperbolic Geometry by Amber Case | Ignite Portland 8
Page 19: Introduction to Hyperbolic Geometry by Amber Case | Ignite Portland 8
Page 20: Introduction to Hyperbolic Geometry by Amber Case | Ignite Portland 8

Thank You!

CyborgCamp October 2010

Cyborgcamp. com Twitter: @caseorganic

caseorganic@gmail. com