Hello everyone,

In regards to the issue highlighted here:
http://groups.google.com/group/sci.math.symbolic/browse_thread/thread/4a8acbd97b1edbc1/c5da6ef9cc8c0f8f...#c5da6ef9cc8c0f8f

I would like to ask the status of Mathematica running on a Sun Ultra
24 ( Intel ) workstation running Solaris 10 8/07 or nv b81 ( see
www.opensolaris.org )?

As I am now starting my second year studies and would like to buy a
Ultra 24 and a student copy of Mathematica 6.

Solaris is my main desktop environment for both development and school
work, I do not use Linux for these tasks nor would I be willing to
even touch Windows with gloves on.

I hope some one from Wolfram could shed some light on this topic?

Thanks for your time,
Edward O'Callaghan.

Today, trying to handle the integral crashing Mathematica,

http://groups.google.com/group/sci.math.symbolic/msg/5e79f0e64e6ef73b

Peter Pein comes up with a nice solution

http://groups.google.com/group/sci.math.symbolic/msg/01e7a861262a4ccd

However, it turns out his solution works only for a subset of
Mathematica versions (please find the details below).

Bravo, Peter!!

-----------------------------------------------------------------

If the same bugs exists through numerous software releases,
I think that is valuable public information.

It just should not happen.

-- Brad Cooper

-----------------------------------------------------------------
- NOT FIXED BUGS ARE DANGEROUS: THEY TEND TO GET MORE SEVERE -
-----------------------------------------------------------------

Quality of CASs is our #1 care.

So our little demo continues.... Hello again from the VM machine
which hopefully soon will not be ignored by CAS manufacturers.

-----------------------------------------------------------------
-- NOT FIXED BUGS ARE DANGEROUS: THEY TEND TO GET MORE SEVERE --
-----------------------------------------------------------------

Quality of CASs is our #1 care.

So our little demo continues.... Hello again from the VM machine
which hopefully soon will not be ignored by CAS manufacturers.

-----------------------------------------------------------------

NIntegrate[Sqrt[1 - z] Sqrt[1 + z^2], {z, -1, 1}]

2.14926

-----------------------------------------------------------------

N[Integrate[Sqrt[1-z] Sqrt[1+z^2], {z, -1, 1}]]

-----------------------------------------------------------------
VERSION OUTPUT RESOLUTION
-----------------------------------------------------------------

Mathematica 6.0 Unevaluated integral <-------------------- BUG

Mathematica 5.2 2.14926 OK

Mathematica 4.2 2.14926 OK

Mathematica 3.0 2.14926 OK

-----------------------------------------------------------------

On Jan 31, 2:40 pm, Vladimir Bondarenko cybertester.com> wrote:

simplify(student[changevar](z=cos(t),%%,t));

1/2*2^(1/2)

On Jan 31, 6:40 am, Vladimir Bondarenko cybertester.com> wrote:

In[1]:= (FullSimplify[#1, -Pi/2 < t < Pi/2] & )[
Sqrt[1 - Sqrt[1 - z^2]]*Sqrt[1 - z]*Dt[z] /. z -> Sin[t]]

Out[1]= Cos[t] Dt[t] Sqrt[(-1 + Cos[t]) (-1 + Sin[t])]

In[2]:= Integrate[%% /. Dt[t] -> 1, {t, -Pi/2, Pi/2}]

Out[2]= 1/Sqrt[2]

Oleksandr

(***************************************************************)

If the same bugs exists through numerous software releases,
I think that is valuable public information.

It just should not happen.

-- Brad Cooper

(***************************************************************)

-----------------------------------------------------------------
-- NOT FIXED BUGS ARE DANGEROUS: THEY TEND TO GET MORE SEVERE --
-----------------------------------------------------------------

Quality of CASs is our #1 care.

So our little demo continues.... Hello again from the VM machine
which hopefully soon will not be ignored by CAS manufacturers.

This example demonstrates YET ANOTHER case of bad defects in the
Wolfram Research Quality Assurance process. Consider, it cannot
trap and fix efficiently bugs the long livers.

The reported here defect persists in Mathematica versions since
2002 to 2008.

-----------------------------------------------------------------

N[(Sqrt[32] - 16)/3]

Hello computer algebra buffs the Earthlings,

Alert! Wake up!

The human race is in danger! The cruel Computers are coming!
Go and show your full superiority over the cold stupid chips!
Peace, labor, May, friendship, chewing gum, positive! Let
give 'em the ultimate battle! And remember,

Train hard, fight easy. -- Field Marshal Alexander Suvorov

http://100megsfree4.com/rusgeneral/suvorov.htm

So 'bout the training. Is there (is!) a Brave Human Warrior
the Simplifier to invent the CAS steps to "elementarize" this

MeijerG([[1], [3/4, 5/4]],[[1, 1/2, -1/2], []],-1)

?
Best wishes,

Vladimir Bondarenko

VM and GEMM architect
Co-founder, CEO, Mathematical Director

http://www.cybertester.com/ Cyber Tester, LLC
http://maple.bug-list.org/ Maple Bugs Encyclopaedia
http://www.CAS-testing.org/ CAS Testing

Hello computer algebra buffs,

Your guesswork is right, again! All the modern computer algebra
systems fail to simplify this directly...

Is there a Brave Human Simplifier to come up with the steps to
"elementarize" (and squeeze much!) this specfunction nightmare

+ MeijerG([[1], [5/4, 3/2]], [[3/4, 3/4, 1/4], []], -1)
- MeijerG([[1], [1/2, 3/4]], [[1/4, 1/4, -1/4], []], -1)

?
Best wishes,

Vladimir Bondarenko

VM and GEMM architect
Co-founder, CEO, Mathematical Director

http://www.cybertester.com/ Cyber Tester, LLC
http://maple.bug-list.org/ Maple Bugs Encyclopaedia
http://www.CAS-testing.org/ CAS Testing

Hello computer algebra aficinados,

Your guesswork is right, again! All the modern computer algebra
systems fail to simplify this directly...

Is there a Brave Human Simplifier to come up with the steps to
"elementarize" (and squeeze much!) this specfunction nightmare

+ MeijerG([[1], [5/4, 3/2]], [[3/4, 3/4, 1/4], []], -1)
- MeijerG([[1], [1/2, 3/4]], [[1/4, 1/4, -1/4], []], -1)

?
Best wishes,

Vladimir Bondarenko

VM and GEMM architect
Co-founder, CEO, Mathematical Director

http://www.cybertester.com/ Cyber Tester, LLC
http://maple.bug-list.org/ Maple Bugs Encyclopaedia
http://www.CAS-testing.org/ CAS Testing

ORIGIN:

(***************************************************************)

If the same bugs exists through numerous software releases,
I think that is valuable public information.

It just should not happen.

-- Brad Cooper

(***************************************************************)

-----------------------------------------------------------------
- NOT FIXED BUGS ARE DANGEROUS: THEY TEND TO GET MORE SEVERE -
-----------------------------------------------------------------

Quality of CASs is our #1 care.

So our little demo continues.... Hello again from the VM machine
which hopefully soon will not be ignored by CAS manufacturers.

This example demonstrates YET ANOTHER case of bad defects in the
Wolfram Research Quality Assurance process. Consider, it cannot
trap and fix efficiently bugs the long livers.

The reported here defect persists in ALL Mathematica versions
since at least 2002 to 2008.

-----------------------------------------------------------------

NIntegrate[Sqrt[1 - z] Sqrt[Sqrt[1 + z^2]], {z, -1, 1}]