Luiz Roberto Meier's profile - activity

Using SAGE 5.12 , jmol applet will runs only in the same window where the notebook was opened. When the pop-up for the help/tutorials is used jmol applet fails to load.

Thank you!

I am not sure i understand you question since you gave two fixed values to x and x1. If you want to find the limit of the function some_function = (z -> z*z1) when z goes to z1, you can define a symbolic function (not to be confused with a python function) :

sage: z1 = 3 + 4*I
sage: some_function(z) = z * z1
sage: some_function
z |--> (4*I + 3)*z
sage: some_function.limit(z=z1)
24*I - 7

Hi,

Suppose I have 2 complex numbers, z and z1 , where z = 1+2I and z1 = 3 + 4I (just an example). How can I compute the following: some_function = z * z1 and I want to know how to find the limit of some_function when z = z1.

I tried hard to find an answer. I used def to define a function, I could define the complex numbers and I can use the limit with rational / real values, but, when I use a complex number, the limit just return the entire explession.

Thank you for any idea / URL to help me.

I figure out the problem: I had to flush my iptables and then I set it again to accept connections from 192.168.x.y only at port 8080 (I can change the default port) and worked fine. Now I can 'see' my SAGE server from my tablet, laptops and desktops. No need to install it in more than 2 computers.

Also I probed the port 8080 from outside the network and it is closed/stealth (both) , so , my guess it is secure.

Thank you all !

I will try now to redo all the steps.. 1) Install of SAGE binary and test if it runs normally in localhost; 2) Reconfigure the firewall of Fedora 18; Can you please show me the line you added in your ipchains to let other from your own network access the SAGE server?

Still not working. Just can't find the local ip address with the port 8080 or 80 whatever. But all the other services (running for lan only) runs normally, I can use apache, oracle, anything. Thanks anyway.

@Luca The errors has gone , but I still unable to connect.

Still not working... maybe there is some .htaccess in somewhere in SAGE folders?

After running the command told by @ppurka I got the following errors: Executing twistd --pidfile="sage_notebook.sagenb/sagenb.pid" -ny "sage_notebook.sagenb/twistedconf.tac" 2013-10-23 14:46:26-0200 [-] Log opened. 2013-10-23 14:46:26-0200 [-] twistd 12.3.0 (/home/lm/sage-5.11-linux-64bit-fedora_release_16_verne-x86_64-Linux/local/bin/python 2.7.5) starting up. 2013-10-23 14:46:26-0200 [-] reactor class: twisted.internet.epollreactor.EPollReactor. 2013-10-23 14:46:26-0200 [-] Traceback (most recent call last):

Yes, @Luca , I can connect to Oracle and tested FTP and Apache. Also, I changed the 8080 to 5000, 6000, 7000 ports and still not working. I can run only in the machine , using the localhost, 192.168.2.x port 8080. I ping and the ports answers but 8080

Thank you for the links but none solved my problem. I still not be able to connect from another PC or tablet to the IP of where sage server is running. I can run it via notebook() and using interface, so, in the computer where the server is I can just type http://192.168.2.101:8080/home/mysage/ (my local_ip, path + user that I created) and it works.. but if I try from any other pc/tablet I can't connect.. maybe it isn't a sage issue but my local firewall.. I got no error message from Sage, the browsers just can't find the server.

Still not working.

Hi!

I'm using Fedora 18 64bits where I installed the SAGE and it runs normally when I'm using localhost:8080 and with local ip of the machine: 192.168.2.51:8080 (as an example).

I checked the firewall (ipchains) , any computer can connect to 192.168.2.51 . I'm trying to run in my tablet (and several computers in a class) the SAGE in the LAN (others programs/servers are working fine).

I did a search in google and here, I'm almost 1 week trying to solve this. I can't connect in the SAGE machine/server from other computers in the local network.

1) Can someone please explain how to set it to run locally?

2) Why not include in future releases an option to automatically turn it on to an entire network and maybe outside (public)? The security issues is up to the admin of the server.

Thank you very much for the attention.

Thank you.

Mr... kcrisman, You keep warning my helps. I'm just trying to help. If later the solution isn't sufficient or the correct one, it isn't my fault but the lack or organizational documentation. There is a pain to find some simple solutions when it isn't in the name of a section of some kind of manual. As you know much more than me, why don't you help to solve? Give a best answer to the above question, you will help the user and forget my ignorance.

Hi,

If it is the output's withd what you aim to increase, just go to "Settings" (top-left of the notebook), then "Notebook settings", and increase the value of "Number of word-wrap columns" (e.g. I have it at 150). Then just "Save" with the button at the bottom and you are done.

Thank you!

Will be practical for you to use a loop with this inside:

var('z')

some loop here

...

z = c[0]

z. <tab> will work.

After peruse a lot of files and docs maybe I have found a simple solution:

sage: var('j,w,t')

(j, w, t)

sage: j = complex(I)

sage: exp( j * w * t )

e^( 1j * w * t )

Hello,

I'm trying to find in manuals and sites how can I extend the cell width (I'm using the notebook environment) because while the notebook itself occupies the entire screen, normally the output cell is breaking with the \ symbol . The command show() put the entire output in a single line.. so.. How can I have the option or what should I read about to change the cell width? I'm needing that because of some matrix and group theory output tables.

Thank you in advance.

I thank you very much for your entire time/answer. That's correct! I will try to identify how to display or produce only positive powers and if I sucess I will post it here. Thank you again!