ajit's profile - activity

Thanks a lot jean-pierre Ortolland. It is helpful.

Thanks John for your detailed answer. I was trying to image compression using SVD with SageMath and wanted the image as

How to imprt images in sagemath? Is there convenient way of importing images in various format such is PNG, JPG etc in S

How to imprt images in sagemath? Is there convenient way of importing images in various format such is PNG, JPG etc in S

How to import images in sagemath? Is there convenient way of importing images in various format such is PNG, JPG etc in

I am also facing the same difficulties. Till recently, it was working fine. I uninstalled and installed few times, even

I am using Linux Operating System (Linux Mint 18.1) 64 bit. Have Sage 8.1 installed by unzipping the sage-8.1-Ubuntu_16.04-x86_64.tar.bz2 in my ssytem.

Thanks Ajit

I have sage installed from pre-installed Sage binary. I wish to use function from the package "database_gap" When I issue a command sage -i database_gap

It gives me an error make: * No rule to make target 'all-toolchain'. Stop. Can someone help me?

Thanks

Thanks, I shall wait for someone to resolve this issue!

I looking to define a homomorphism between a permutation group to another permutation group by defining the map explicitly. Same between matrix groups? Can some body help? For example The following codes gives an error

sage: G = SymmetricGroup(5)
sage: r = G('(1,3,5,2,4)')
sage: s = G('(2,5),(3,4)')
sage: H = G.subgroup([r,s])
sage: D = DihedralGroup(5)
sage: (a,b)= D.gens()
phi = PermutationGroupMorphism(H,D, [a,b])
phi(x)

Hi

I want to compute the following integral:

B=40
Ef=1.13*10^(-18)
KT=4.03*10^(-21)
mu=1.732*9.27*10^(-24)
f(t)=(sin(t)*(cos(t))^(3/2))/(exp((B*mu*cos(t)-Ef)/KT)+1)
numerical_integral(f,0,pi)

However, it gives me an error

"Exception ValueError: ValueError('negative number to a fractional power
not real',) in 'sage.gsl.integration.c_ff' ignored"

Can somebody resolve this?

Thanks and regards Ajit Kumar

I want to evaluate the following integral. B=40 Ef=1.1310^(-18) KT=4.0310^(-21) mu=1.7329.2710^(-24) f(t)=(sin(t)(cos(t))^(3/2))/(exp((Bmu*cos(t)-Ef)/KT)+1) numerical_integral(f,0,pi,eps_rel=1e-20)

Howver, it gives "
Exception ValueError: ValueError('negative number to a fractional power not real',) Can somebody help? Ajit Kumar

How to fill region between two graphs using different styles or patterns?

Thats correct! Thanks for you response.

How to mention point style in plot2d option?

Is it possible to plot coordinate axes and not boxed in 3d plot in sage? I have been looking for this but have not succeeded yet and as result one has to plot coordinate axes separately like one in http://ask.sagemath.org/question/1441....

Ajit Kumar