Re: Peano's space-filling curve

From: Robin Chapman (rjc_at_ivorynospamtower.freeserve.co.uk)
Date: 06/07/04


Date: Mon, 07 Jun 2004 18:53:04 +0100

John Morgan wrote:
>
> Here I read that f is continuous and onto. Elsewhere a
> poster tells me that f cannot be all three of '1 to
> 1',continuous and onto. So f is not '1 to 1'? Re-arrange the
> following words to make a well-known phrase, or saying.
> "together., Get, act, your,"

Here are the facts:

(i) there is a bijection f : [0,1] -> [0,1]^2,
(ii) there is a continuous surjection g : [0,1] -> [0,1]^2,
(iii) there is no continuous bijection h : [0,1] -> [0,1]^2.

> John

Any relation to Piers?

-- 
Robin Chapman, www.maths.ex.ac.uk/~rjc/rjc.html
"Lacan, Jacques, 79, 91-92; mistakes his penis for a square root, 88-9"
Francis Wheen, _How Mumbo-Jumbo Conquered the World_


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