Ordinals

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• Dr Forster (DPMMS)
• Sunday 04 March 2012, 13:15-14:00
• Winstanley Lecture Theatre, Trinity College.

If you have a question about this talk, please contact Mary Fortune.

Part of the TMS Symposium

Ordinals were the last acquisition by the Mathematical Zoo for the Number House, a donation by Cantor in the late 19th century. Unlike naturals, integers, rationals, reals and complexes they can be infinite as well as finite, and therein lies much of their interest. In this talk I shall explain where they come from, what they can do for you, and why (despite their being infinite) you (a mere finite being) need to worry about them.

This talk is part of the Trinity Mathematical Society series.

This talk is included in these lists:

• Guy Emerson's list
• Trinity Mathematical Society
• Winstanley Lecture Theatre, Trinity College
• bld31

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