[Blindmath] Nemeth symbol question

[cnsbaker at access.k12.wv.us]

According to The Nemeth Braille Code for Mathematics and Science Notation 1972 Revised (commonly called The Green Book) the symbol 2 4 6 can be many things but when preceded by a superscript or subscript (which it is in this case) it is a contraction for comma and optional space at the superscript or subscript level.

Explanation of when this sign is used:
A commonly occurring superscript or subscript notation is the one in which two consecutive items are separated by a comma with an optional space following the comma. In this configuration, the symbol 2 4 6 must be used to replace the comma and the optional space used in this way. This contracted form must not be used to replace a comma and the optional space which follows it in a configuration which is on the base line.

The print example shows:
x subscript i comma space subscript j comma space subscript k

The Nemeth example shows:
dots 1 2 4 6 dots 5 6 dots 2 4 dots 2 4 6 dots 2 4 5 dots 2 4 6 dots 1 3

so the dots 2 4 6 are for the comma and space in the print between subscripts that belong to the x

Hope this helps.

 Connie


----- Original Message -----
From: Sarah Jevnikar <sarah.jevnikar at utoronto.ca>
Date: Friday, March 4, 2011 9:16 am
Subject: Re: [Blindmath] Nemeth symbol question
To: 'GianniP46' <giannip46 at earthlink.net>, 'Blind Math list for those interested in mathematics' <blindmath at nfbnet.org>


> Thank you everyone for your help.
>  
>  -----Original Message-----
>  From: blindmath-bounces at nfbnet.org 
> [mailto:blindmath-bounces at nfbnet.org] On
>  Behalf Of GianniP46
>  Sent: March 4, 2011 8:16 AM
>  To: Blind Math list for those interested in mathematics
>  Subject: Re: [Blindmath] Nemeth symbol question
>  
>  pretty sure that you are right about the 5 6 being a subscript.  This 
> sounds
>  
>  like a composition of transformations of some sort.  A sub 0 usually 
> means a
>  
>  reflection in the origin doesn't it?  and a T would mean a 
> translation which
>  
>  is a shift in an x, y direction.  Those numbers are the values that 
> you need
>  
>  to shift the graph by.
>  ----- Original Message ----- 
>  From: "Sarah Jevnikar" <sarah.jevnikar at utoronto.ca>
>  To: "'Blind Math list for those interested in mathematics'" 
>  <blindmath at nfbnet.org>
>  Sent: Friday, March 04, 2011 1:39 AM
>  Subject: [Blindmath] Nemeth symbol question
>  
>  
>  > Hi all,
>  > I came across a strange symbol I've never seen before. I'll 
> transcribe the
>  > whole line of math for context.
>  >
>  > Capital f, followed by dots 5-6 (I assume a subscript), then a 0, 
> then the
>  > strange symbol: dots 2-4-6, followed by a capital t
>  >
>  > In some cases, the t has been replaced with actual numbers. What 
> does the
>  > 2-4-6 symbol mean? Anyone know where I can find a directory of 
>  > non-standard
>  > Nemeth symbols?
>  >
>  > Thank you kindly,
>  > Sarah Jevnikar
>  >
>  >
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