http://www.maplesoft.com/support/help/Maple/view.aspx?path=GroupTheory/SylowSubgroup

P2:=SylowSubgroup(2,G);

P2;

in above example, it can show a permutation group

G:=AlternatingGroup(5);

P2:=SylowSubgroup(3,G);

a permutation group on .... letters

but in some example such as above, it only show a statement a permutation group on .... letters

how to show what it is?

Hello;

I had Maple 2015.1 running. I did Tools->check for update. It said that there is an update available! then I did ok, go and update. Maple downloaded about 60 MB of stuff, asked me to close Maple to finish the update. I close Maple, and it finished the update with no problem.

When I open Maple, I still see it saying 2015.1, so what was the update for?  

It will be nice if Maple tells the users what the update is going to be for. Like saying something to the effect that version XX.XX is available or something. It just said update available.

How can one find what was updated, and why did the version number not get changed? Is there a log file or some command one can use that shows the updates made to current version one is using?

Help->About still says 2015.1, is it possible Maple update just forgot to change the version number? What is the current and latest version number of Maple?  

When I do check for update now, it says no update is available. So I must be running the latest version. But this what what I had before I updated?

    kernelopts(version)
    Maple 2015.1, X86 64 WINDOWS, Jun 3 2015, Build ID 1049007

I am on windows 7, 64 bits.

The following commands show that I have an existing archive containing one procedure.

Why do I receive the error message when I try to save a second procedure to the same archive. The procedure I am trying to save has been executed within the same worksheet where I issue the savelib command.

> LibraryTools[ShowContents]("C:\\Program Files\\Maple 15\\Earl.mla");

LibraryTools[WriteMode]("C:\\Program Files\\Maple 15\\Earl.mla");

savelibname := "C:\\Program Files\\Maple 15\\Earl.mla";

savelib('CreateCircleVector');

[["RotateDisplay.m", [2015, 10, 1, 16, 3, 22], 41984, 655]]
[["C:\Program Files\Maple 15\Earl.mla", "WRITABLE"]]
"C:\Program Files\Maple 15\Earl.mla"

Error, cannot lock repository, C:\Program Files\Maple 15\Earl.mla

Hi guys,

i want to find d'alembertian of a function of Ricci scalar (f(R)) , but it seems something is wrong .

f(R).mw

thanks in advance

i have an application of emmbeded components i will like to know if i can create a stand alone exececutable using maple player

Which of Maple commands is better for computing the radical of a polynomial f (less time of computation and less complexity)?

For example if f=x^3+3x^2y+3xy^2+y^3 then rad(f)=x+y.

in harmonic ocillator version, why it has error after it dsolve?

with(Physics[Vectors]):
with(SumTools):
Setup(mathematicalnotation = true):

Qs is Qss*cos(m*t+phi);

H := 1/(8*Pi*c^2)*Summation(Commutator(diff(Qs*cos(w*t+phi),t)*diff(conjugate(Qs*cos(w*t+phi)),t)+w^2*Qs*cos(w*t+phi)*conjugate(Qs*cos(w*t+phi))),ks=1..3)-1/c*(Summation(conjugate(Qs*cos(w*t+phi)),ks=1..3));

or

H := 1/(8*Pi*c^2)*Summation(Commutator(diff(Qs,t)*diff(conjugate(Qs),t)+w^2*Qs*conjugate(Qs)),ks=1..3);

#Qs = p, Ps := Pss*sin(m*t+phi) Ps = qs

i use

H := 1/(8*Pi*c^2)*Summation(Commutator(diff(Qs*cos(w*t+phi),t)*diff(conjugate(Qs*cos(w*t+phi)),t)+w^2*Qs*cos(w*t+phi)*conjugate(Qs*cos(w*t+phi))),ks=1..3)-1/c*(Summation(conjugate(Qs*cos(w*t+phi)),ks=1..3));

 HJ := subs(Qs= diff(f(q,P,t), q), H);

H:=subs( f(q,P,t) = f1(q) + f2(t), HJ);
sol:=dsolve({rhs(H)=E,lhs(H)=E});
S:=rhs(sol[1][1]+sol[1][2]);
p:=diff(S,q);
Q:=diff(S,E);

Hello

when i am trying to isolate for Rev in the following expression

the program doesnt respond.do you know why?

I have a vector of dimension n with each component being an equation of a linear system.

Can maple convert this Vector to a Matrix-Vector form with the matrix being constant coefficients?

Let B is a list of polynomial conditions such that  are none zero. Consider one polynomial f. How can I detect that f is none zero w.r.t. B? For example if B=[a-1,b+2,b-c,ac-1] and f=a^2c-ac-a+1. From B we can conclude that a<>1 and b<>2 and b<>c and ac<>1. How can I deduce that f<>0 w.r.t. B automatically?

Hi all,

I have been trying to plot Riemann Zeta Function on certain range, but it takes a lot of time(several minutes ,maybe hours).These are the basic things.

How to speed up ploting Zeta?

The same problem with Optimization.

Zeta-Problems.mw

Mathematica don't have this such problems.

Mathematica ploting Zeta with 0.125 second and optimizing 3.42 second.Maple few hours maybe......

How would I find inflection points? I believe it would the same as if I was finding critical points for f '.

Function is:(7-x)*sin(x^2-7)

So would it be:

a:=fsolve(f2,-2.4..2.4);
b:=fsolve(f2,-2.4..-0.06);
c:=fsolve(f2,-0.06..2.4);
d:=fsolve(f2,1.49..3);
e:=fsolve(f2,-3 ..-1.52);

Plz and thanks!

Hi all,

I am a new use of Maple. I have a expression :

2.560000000*10^(-30)*k1*(2.309486127*10^38*n-1.154743064*10^38-1.186994552*10^37*k2^2*n^2+2.373989104*10^37*k2^2*n+8.541613702*10^37*k2*n^2-1.154743064*10^38*n^2+7.119519043*10^37*n^2*k1^2+6.495962587*10^37*k1*n^2-1.293058266*10^38*k2*n^2*k1-1.186994552*10^37*k2^2-1.708322740*10^38*k2*n+1.293058266*10^38*k2*n*k1+8.541613702*10^37*k2-3.529088273*10^37*k1-2.966874313*10^37*k1*n)/(1.620847396*10^9*n-1.620847396*10^9)

I want to simplify it. Obviously, it can be simplifed by simplifying the coeffecient of each terms. 

When I use 'simplify' command in Maple 18, I couldn't got what I want. 

Any suggetstions?

Thanks in advance.

Hi, 

  I have the following input

***

restart;
with( Statistics ):

a:=2;c:=0.3;
g:= exp(-a*x) + c*a*exp(-a*x);
#f := x -> piecewise( x < 0, 0, x>0, g );
 f :=x -> piecewise( x < 0, 0, x>0, exp(-a*x) + c*a*exp(-a*x));

norm_factor:=int( f(x), x=0..infinity );
print(norm_factor);

randomize():
F := Distribution( PDF = 1/norm_factor*f ):
X := RandomVariable( F ):

N := 20;
S := convert( Sample(X,N), list );

print(`cc`,S[1]);

***

The code works. However, if I comment out 

 f :=x -> piecewise( x < 0, 0, x>0, exp(-a*x) + c*a*exp(-a*x));

 , then use

f := x -> piecewise( x < 0, 0, x>0, g );

i.e.

f := x -> piecewise( x < 0, 0, x>0, g );
 #f :=x -> piecewise( x < 0, 0, x>0, exp(-a*x) + c*a*exp(-a*x));

It is said "

Error, (in Statistics:-Sample) unable to construct the envelopes for _R, try to specify the initial range"

The norm_factors are actually the same for both inputs. What is the reason for the error message?  Suppose I still want to use something like

f := x -> piecewise( x < 0, 0, x>0, g );

,how to fix the problem?

Thank you very much

I'm drawing a complete blank on this. 

The probability of a branch breaking in a particular tree as someone climbs is 2%.  After the person has climbed over 40 branches, did any of them break?  I'm trying to set that up as a simulation in Maple but I'm not sure about how to do it. 

I guess if I generate a random number and it falls under .02 it breaks, is that how I determine that?

randomize():

n := 0;
for i to 40 do
ran := evalf(rand()*10^(-12));
if ran < 0.2e-1 then n := n+1: end if:
end do:
print("Branch broke", n, "times")

I'm not sure I've got the probability right.