1 Nov 2010 13:37

### different shaped brackets

Dear Everyone,
I have a little problem:
Is it a good typing style to always have DIFFERENT shaped brackets in
mathematical equations involving several bracketed expressions? For example,
is good to write:
1)    ( {[a+b+c](g-p)}+j)(d-n+x) = y

or

2)  ( ((a+b+c)(g-p))+j)(d-n+x) = y, where some brackets may be larger than
others?

That is, is it a good style to mix the brackets or to use one type of
bracket, some of which may be larger than others?
Thanking you all,
D.O.
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1 Nov 2010 13:53

### Re: different shaped brackets

El nov 1, 2010, a las 6:07 p.m., David Owen escribió:

> Dear Everyone,
> I have a little problem:
> Is it a good typing style to always have DIFFERENT shaped brackets in
> mathematical equations involving several bracketed expressions? For example,
> is good to write:
> 1)    ( {[a+b+c](g-p)}+j)(d-n+x) = y
>
> or
>
> 2)  ( ((a+b+c)(g-p))+j)(d-n+x) = y, where some brackets may be larger than
> others?
>
> That is, is it a good style to mix the brackets or to use one type of
> bracket, some of which may be larger than others?

I am not aware that there is a written rule about this, but I would (based on what little mathematics I have
seen) not mix different types of brackets just on a whim.  Brackets have special meanings in other contexts
as you know: {x,y} is a set, whilst (x,y) is probably an ordered pair or the range of all values i where x < i < y.
If you are creating some appropriate notational standard (something not in conflict with any
widely-used one) that a particular type of bracket means something specific in your work, it is okay, but
mixing different types of brackets with no meanings attached may cause confusion or problems with
consistency of usage.  Thus or otherwise, you may find reviewers not liking such mixing.

Regards,

Shrisha Rao

> Thanking you all,


1 Nov 2010 14:15

### Re: different shaped brackets

Hello,

> Is it a good typing style to always have DIFFERENT shaped brackets in
> mathematical equations involving several bracketed expressions?

The usual use of brackets in expressions is for grouping.  So, ( ) is
used as first level grouping, then { } for grouping and then [ ]. If
specific instances and definitions are associated with brackets, then
use them as per definitions.

> ({[a+b+c](g-p)}+j)(d-n+x) = y

As per above guideline, this expression should be written as

{(a + b + c)(g - p) + j}(d - n + x) = y

The order of evaluation (BODMAS) is important while evaluating
expressions. BODMAS stands for Bracket, Order of exponents/root,
Division, Multiplication, Addition, Subtraction. In the above
expression, we want to do "a + b + c" before multiplying with "g - p",
so brackets are necessary to override the default operator precedence.

-- Raj
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2 Nov 2010 12:05

### Re: tugindia Digest, Vol 95, Issue 1

Hi, Shrisha, Raj,
Thanks very much. I appreciate it.
D.O.

On Tue, Nov 2, 2010 at 4:00 AM, <tugindia-request@...> wrote:

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>   1. different shaped brackets (David Owen)
>   2. Re: different shaped brackets (Shrisha Rao)
>   3. Re: different shaped brackets (Raj Singh)
>
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> ----------------------------------------------------------------------
>


10 Nov 2010 13:41

### information regarding

HI,
I am writing about a subject which is not directly related to tugindia
group,but need a help from the group. I want to know that is there any forum
like tugindia which helps in web development problems. I am a learner. If
anybody knows and write to me I will be grateful.
sp
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10 Nov 2010 12:12

### Doubts on Theorems and Lemmas

Dear all,
Greetings. I am writing a small paper containing few theorems and lemmas in LaTex. I have declared my
document class as ‘article’. I want my theorems and lemmas to appear in this format: Theorem 1.1, if it
appears as first theorem in first section of the paper, Lemma 3.2 if it is the second lemma in third section
of the paper and so on while using the conventional \begin....\end format. But since the document class is
declared as ‘article’, I am not getting in the format I require. Lemmas and Theorem appear as Lemma 1,
Lemma 2…, Theorem 1, Theorem 2 etc. irrespective of the section information. Can some one sort me out?
With cordial regards,
Ramki
IIT Kharagpur

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10 Nov 2010 17:00

### Re: Doubts on Theorems and Lemmas

On Wed, Nov 10, 2010 at 4:42 PM, <ramki@...> wrote:

> Dear all,
>        Greetings. I am writing a small paper containing few theorems and
> lemmas in LaTex. I have declared my document class as ‘article’. I want my
> theorems and lemmas to appear in this format: Theorem 1.1, if it appears as
> first theorem in first section of the paper, Lemma 3.2 if it is the second
> lemma in third section of the paper and so on while using the conventional
> \begin....\end format. But since the document class is declared as
> ‘article’, I am not getting in the format I require. Lemmas and Theorem
> appear as Lemma 1, Lemma 2…, Theorem 1, Theorem 2 etc. irrespective of the
> section information. Can some one sort me out?
> With cordial regards,
> Ramki
> IIT Kharagpur
>

Please see section 3.4.3 (page 56) of the book: Leslie Lamport, "LaTeX,"
Pearson Education, 1994 (Third Indian Reprint 2002).

\newtheorem{theorem}{Theorem}[section] % This appears in the preamble.

...............

\begin{theorem}

Statements of the theorem ....

\end{theorem}



11 Nov 2010 03:54

### Re: Doubts on Theorems and Lemmas

Dear Mr. Abhilash,
Thanks so much. It works beautifully.
with warm regards,
Ramki
EE/IIT Kharagpur
----- Original Message -----
From: Abhilash G <abhilash <at> nitc.ac.in>
To: TUGIndia Mailing List <tugindia <at> tug.org>
Sent: Wed, 10 Nov 2010 21:30:49 +0530 (IST)
Subject: Re: [Tugindia] Doubts on Theorems and Lemmas

On Wed, Nov 10, 2010 at 4:42 PM, <ramki <at> ee.iitkgp.ernet.in> wrote:

> Dear all,
>        Greetings. I am writing a small paper containing few theorems and
> lemmas in LaTex. I have declared my document class as ‘article’. I want my
> theorems and lemmas to appear in this format: Theorem 1.1, if it appears as
> first theorem in first section of the paper, Lemma 3.2 if it is the second
> lemma in third section of the paper and so on while using the conventional
> \begin....\end format. But since the document class is declared as
> ‘article’, I am not getting in the format I require. Lemmas and Theorem
> appear as Lemma 1, Lemma 2…, Theorem 1, Theorem 2 etc. irrespective of the
> section information. Can some one sort me out?
> With cordial regards,
> Ramki
> IIT Kharagpur
>

Please see section 3.4.3 (page 56) of the book: Leslie Lamport, "LaTeX,"
Pearson Education, 1994 (Third Indian Reprint 2002).


11 Nov 2010 15:25

### Help for Conference

HelloFor a nationalconference to be held shortly here we are planning to&nbsp; use LaTeX for compiling
abstracts and preparing programme etc. Can any body kindly suggest useful packages?D. Venu GopalI use
OpenOffice 3.0!Do you!!
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12 Nov 2010 02:16

### Re: Help for Conference


Krishnan

On Thu, 11 Nov 2010, Duvvuri Venu Gopal wrote:

> For a nationalconference to be held shortly here we are planning
> to&nbsp; use LaTeX for compiling abstracts and preparing programme etc.
> Can any body kindly suggest useful packages?D.

If you are planning to publish the conference proceedings, please have a
look at the "combine" and "proc" classes

--
Krishnan

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Gmane