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From: Markus Gebhard <ukgh@rz.uni-karlsruhe.de>
Newsgroups: alt.ascii-art
Subject: Re: JavE 2.0 - New Release! (Ascii-art freeware)
Date: Sun, 14 Oct 2001 18:10:22 +0200
Organization: University of Karlsruhe, Germany
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Timofei Shatrov wrote:
> 
> On Sun, 14 Oct 2001 13:25:45 +0200, Markus Gebhard <ukgh@rz.uni-karlsruhe.de>
> tried to confuse everyone with this message:
> 
> >Hello,
> >
> >It took me a lot of time and work but finally it is finished: The new
> >version 2.0 of my freeware program can be downloaded from:
> >  http://www.jave.de
> 
> Great work, man!

Thanks :-)

> I enjoyed it very much. A lot of cool features and I still dunno if I tried them
> all. I'd like to comment on math expressions stuff.
> 
> It seems that you've got math symbols from the book "Concrete Mathematics" by
> Graham, Knuth and Patashnik (as I get the quote for my sig :). This book indeed
> rocks) so there aren't such symbols like integrals and others. I haven't idea how
> the integral could be drawn... Maybe that way:
>    b
>    _
>   | `
>   |   x dx
> ._;
>  a

Hey, looks cool! Actually integrals are already partially included in
JavE. Try:

integral(x^2;x)

  /  2
 |  x  dx
/

I have not yet finished this one: integral(x^2;x=1..2), but part of it
already works:

integral(x^2;x=y)

  /  2
 |  x  dx
/
 y

I am not sure about the integral symbol. Yours looks much better than
mine, but on the other hand it wastes some space...
I have also planned this kind of integral:
ointegral(x)  
  /
 |
(|)
 |
/ 
But the problem is that when I want to include everything possible the
options are endless: 
  ///
 |||
(|||)
 |||
/// 

> composition: x o y  (o is the symbol)
> 
> ~ symbol (well, also there is "twisted" equal sign and three-dashes equal sign
> but they're too hard to implement)
> 
> plus-minus and minus-plus:
> 
> +  -
> -  +
> 
> (they're ugly)
>                         _
> and (a^b) or (avb) not ( 'b)

Oh, here is one thing that already works:
NOT b
_
 | b

Ok, I have not done AND and OR, but I think they will look like that:

a \/ b        a /\ b

> quantors (turned 180 degrees A and E) - any ideas?

I have planned them this way:

\__/
 \/    forall
_  
 |
-|
_|  exists

> aleph , turned 180 degree delta (gradient), Plank's constant (h with dash)
> 
> {x} brackets
> 
> U and turned 180 degrees U  (conjugation and interface if I translated it right)

 (_)
  _
 ( ) 
  _
 (_
  _
  _)

> Microsoft Equation Editor also supports Evil Elliptical Symbol of Veyerstrass
> which I'm unable to explain :).

I have 2 or 3 sheets of paper on my table with mathematical symbols and
construct that do not yet work. The greatest problem is constructing a
grammar for parsing the expression. But I learn more about it day by
day.  

Here is a quite complex example that already works:
  floor(sum(i=1..2;sqrt(a/x/sqrt(int([sin {xi/b}]^2;x=y)))))
This expression does not make sense but I like the result:
|            _________________________________  |
|           |                a                  |
|           |                -                  |
|           |                x                  |
|    2      | -------------------------------   |
|   ---     |      _________________________    |
|   \    _  |     |   /  _           _ 2        |
|    >    \ |     |  |  |       ._    |         |
|   /      \|     |  |  |       (.    |         |
|   ---     |  _  |  |  |       (_    |         |
|  i = 1    |   \ |  |  |        -'   |         |
|           |    \|  |  |  sin -----  |  dx     |
|           |     | /   |_       b   _|         |
|           |     |  y                          |
|_                                             _|

> But anyway, JavE is still the best ascii-art editor in the world!

Thanks a lot :-)

Markus