Re: Mersenne: Re: Smooth and hairy numbers

2000-02-14 Thread Frank_A_L_I_N_Y

I would be more worried about a more exact definition of the word small.
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From: Robert G. Wilson v [EMAIL PROTECTED]
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Date: Monday, February 14, 2000 1:14 PM
Subject: Re: Mersenne: Re: Smooth and hairy numbers


I would think that 2^727 -1 would qualify as hairy.

[EMAIL PROTECTED] wrote:

 If smooth numbers are ones whose prime factors are all small,
 what then are hairy numbers?  Is there an official definition?

 "And Jacob said to Rebekah his mother, Behold, Esau my
 brother is a hairy man, and I am a smooth man:" (Gen. 27:11)

 George S.

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Re: Mersenne: Re: Smooth and hairy numbers

2000-02-14 Thread Robert G. Wilson v

I would think that 2^727 -1 would qualify as hairy.

[EMAIL PROTECTED] wrote:

 If smooth numbers are ones whose prime factors are all small,
 what then are hairy numbers?  Is there an official definition?

 "And Jacob said to Rebekah his mother, Behold, Esau my
 brother is a hairy man, and I am a smooth man:" (Gen. 27:11)

 George S.

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Re: Mersenne: Re: Smooth and hairy numbers

2000-02-03 Thread Pierre Abbat

On Thu, 03 Feb 2000, [EMAIL PROTECTED] wrote:
If smooth numbers are ones whose prime factors are all small, 
what then are hairy numbers?  Is there an official definition?

"And Jacob said to Rebekah his mother, Behold, Esau my
brother is a hairy man, and I am a smooth man:" (Gen. 27:11)

Also, Greek has smooth and rough breathing, called psilé kai daseia. Daseia
means hairy.

I looked in Eric Weisstein's World of Mathematics and found no hairy numbers.
There are, though, a Hairy Ball Theorem (the hair has to have a whorl or other
singularity somewhere) and Haar integral, function, measure, and transform (one
cycle of a square wave at a power-of-two frequency).

phma
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Mersenne: Re: Smooth and hairy numbers

2000-02-03 Thread Geosas

If smooth numbers are ones whose prime factors are all small, 
what then are hairy numbers?  Is there an official definition?

"And Jacob said to Rebekah his mother, Behold, Esau my
brother is a hairy man, and I am a smooth man:" (Gen. 27:11)

George S.

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