nate_iverson's profile - activity

how do we access inline help? previously typing a function then ? [tab] worked right? now it seems to be something different

I noticed that GO(4,4,1) is returning order a group of order 72 while native gap returns 7200. Apparently it doesn't encode the order of the field correctly and always sets it to 2. Run the following to verify the error

sage:libgap(GO(4,4,1))

GO(+1,4,2)

or

sage:libgap(GO(4,GF(4),1))

GO(+1,4,2)

This is in 'SageMath version 8.1, Release Date: 2017-12-07' on ubuntu 18.04 apt installation.

Is there some other way to access native GAP commands in a worksheet that I'm overlooking?

In particular I'm just interested in evaluating the native gap command

Order(GO(1,4,4));

How would you control the subticks in a 2d plot?

var('x')
p=plot(5*sin(x/10)*sin(x),(x,0,20*pi))
p.show(ticks=[[0,5*pi,10*pi,15*pi,20*pi],5],tick_formatter="latex")

Gives the labelled ticks exactly where I would like them but I'd like to have unlabelled ticks at every pi value. In particular I'm looking at graphing +-5sin(x/10) and having some students fill in the plot of the more complicated function

Try

def Pabrf:
    return N((abs(Be*exp(-i*Hrfrf(Phip=0)*tp)*Al))^2)
plot(Pabrf)