Skip to main content
Skip to search
Ideas change everything
WATCH
TED Talks
Browse the library of TED talks and speakers
Playlists
100+ collections of TED Talks, for curious minds
TED Series
Go deeper into fascinating topics with original video series from TED
TED-Ed videos
Watch, share and create lessons with TED-Ed
TEDx Talks
Talks from independently organized local events
DISCOVER
Topics
Explore TED offerings by topic
Podcasts
Explore the TED Audio Collective
Ideas Blog
Our daily coverage of the world of ideas
Newsletters
Inspiration delivered straight to your inbox
ATTEND
Conferences
Take part in our events: TED, TEDGlobal and more
TEDx Events
Find and attend local, independently organized events
TED on Screen
Experience TED from home
TED Courses
Learn from TED speakers who expand on their world-changing ideas
PARTICIPATE
Nominate
Recommend speakers, TED Prize recipients, Fellows and more
Organize a local TEDx Event
Rules and resources to help you plan a local TEDx event
Translate
Bring TED to the non-English speaking world
TED Fellows
Join or support innovators from around the globe
ABOUT
Our Organization
Our mission, history, team, and more
Conferences
TED Conferences, past, present, and future
Programs & Initiatives
Details about TED's world-changing initiatives
Partner with TED
Learn how you can partner with us
TED Blog
Updates from TED and highlights from our global community
SIGN IN
JOIN TED
JOIN TED
Type to search
TED is supported by ads and partners
00:00
Visit advertiser
無限大有多大？ - Dennis Wildfogel
3,110,835 views |
Dennis Wildfogel |
TED-Ed
• July 2012
Read transcript
完整課程請見：http://ed.ted.com/lessons/how-big-is-infinity 藉由集合論的基礎，我們來探索這令人費解的「無限多種無限大」── 並看看它如何讓數學家得到「數學裡也有沒辦法回答的問題」這樣的結論。 課程：Dennis Wildfogel 動畫：Augenblick Studios
space
math
TED-Ed
TED is supported by ads and partners
