Search All of the Math Forum:

Views expressed in these public forums are not endorsed by NCTM or The Math Forum.

Notice: We are no longer accepting new posts, but the forums will continue to be readable.

Topic: Wikipedia and fractions in other base then decimal
Replies: 16   Last Post: Feb 11, 2013 9:43 PM

 Messages: [ Previous | Next ]
 Virgil Posts: 8,833 Registered: 1/6/11
Re: Wikipedia and fractions in other base then decimal
Posted: Feb 11, 2013 6:03 PM

In article
JT <jonas.thornvall@gmail.com> wrote:

> On 11 Feb, 23:17, Virgil <vir...@ligriv.com> wrote:
> > In article
> >
> >
> >
> >
> >
> >
> >
> >
> >
> >  JT <jonas.thornv...@gmail.com> wrote:

> > > On 11 Feb, 09:00, Virgil <vir...@ligriv.com> wrote:
> > > > In article

> >
> > > > JT <jonas.thornv...@gmail.com> wrote:
> > > > > Wikipedia claims that 1/2 decimal 0,5 is 0,1 in ternary... and also
> > > > > 0,1 in binary.....

> >
> > > > > In reality it is 0.12 in ternary and 0.101 in binary
> >
> > > > Shouldn't 0.12 in base three be the same as
> > > > 1/3 + 2/3^2 = 3/9 + 2/9 = 5/9?

> >
> > > > I make one-half expressed in base 3 to be 0.1111...
> > > > --

> >
> > >http://www.anybase.co.nf/
> >
> > If that says otherwise, it is wrong!
> > --

>
> No my algorithm write bases in finite way, the correct way to write
> numbers in bases, and it is generic work for any base. How the
> multiples really work is easy for anyone with a brain to understand,
> but first one have to understand what a fraction and a whole number
> is. And neither exist upon your numberline.

You have never even seen my numberline, which contains all infinitely
many of both.

And in standard place value notation, in which each place has place
value of 1/base times the one to its left, your goop is gunk.
--

Date Subject Author
2/11/13 JT
2/11/13 Virgil
2/11/13 JT
2/11/13 Virgil
2/11/13 Virgil
2/11/13 JT
2/11/13 Virgil
2/11/13 JT
2/11/13 Virgil
2/11/13 William Elliot
2/11/13 JT
2/11/13 Jussi Piitulainen
2/11/13 William Elliot
2/11/13 JT
2/11/13 Jussi Piitulainen
2/11/13 JT