play and relax: games for kids games
  Cut the knot: learn to enjoy mathematics
A math books store at a unique math study site. Learn to enjoy mathematics.
Google
Web CTK
Try our no ads browsing

Best sites for teachers
Sites for teachers
Sites for parents
Terms of use
Awards

Interactive Activities
CTK Exchange
CTK Insights - a blog

Games & Puzzles
What Is What
Arithmetic/Algebra
Geometry
Probability
Outline Mathematics
Make an Identity
Book Reviews
Eye Opener
Analog Gadgets
Inventor's Paradox
Did you know?...
Proofs
Math as Language
Things Impossible
Visual Illusions
My Logo
Math Poll
Cut The Knot!
MSET99 Talk
Other Math sites
Front Page
Movie shortcuts
Personal info
Privacy Policy

Guest book
News sites

Recommend this site

Best sites for teachers
Sites for teachers
Sites for parents

Education & Parenting

Manifesto: what CTK is about Buying a book is a commitment to learning Table of content Try our no ads browsing Things you can find on CTK Chronology of updates Email to Cut The Knot Recommend this page

Subject: Re: Diagonal Process
Date: Mon, 13 Jan 1997 18:13:25 -0500
From: Alex Bogomolny

Dear Airton:

the following is certainly an impossible task:

>  if I take the digits in any row of the matrix
>  as being an integer written from right to left

The rows af the matrix might be infinite because, for example, the number sqrt(2)/2 will be in some row, right? Then how would you write it from right to left? Written from left to right it's still an infinite sequence of digits and, hence, is not an integer.

Do you agree with this?

 

 

Copyright © 1996-2008 Alexander Bogomolny

29713903Page copy protected against web site content infringement by Copyscape


Search:
Keywords:


Latest on CTK Exchange
try this puzzle ?/?? + ?/?? + ?/? ...
Posted by albert1950
2 messages
03:40 PM, Aug-26-08

Numbers raised to the power of 0
Posted by Chris Tolley
20 messages
12:17 PM, Aug-25-08

Arbelos : 1) Geometrical Construc ...
Posted by Sundar Krishnan
12 messages
06:29 AM, Aug-12-08

concerning pi
Posted by Lloyd Marks
4 messages
08:25 AM, Aug-22-08

Triangles With Equal Area
Posted by Bui Quang Tuan
5 messages
07:20 PM, Aug-26-08

Coxeter Introduction to Geometry
Posted by WiZaRd
1 messages
09:15 AM, Aug-23-08

site questions
Posted by madisonv
2 messages
04:24 PM, Aug-26-08