[sage-support] Re: Dvorak Keyboard
sudo dpkg-reconfigure console-setup worked great, problem sloved thanks for the help. David On Sep 19, 7:36 pm, Q <[EMAIL PROTECTED]> wrote: > I am running VMware Sage on my Windows box, is there a way to change > the keyboard layout that Sage uses from Qwerty to Dvorak? Or would it > be located somewhere in the VMware Player software? Or should I just > convert to Linux? > > Thanks, > David --~--~-~--~~~---~--~~ To post to this group, send email to sage-support@googlegroups.com To unsubscribe from this group, send email to [EMAIL PROTECTED] For more options, visit this group at http://groups.google.com/group/sage-support URLs: http://www.sagemath.org -~--~~~~--~~--~--~---
[sage-support] Re: Dvorak Keyboard
Q wrote: > I am running VMware Sage on my Windows box, is there a way to change > the keyboard layout that Sage uses from Qwerty to Dvorak? Or would it > be located somewhere in the VMware Player software? Or should I just > convert to Linux? Since the VMware image is just ubuntu, you might look for how to change Ubuntu to have a dvorak keyboard layout. Two URLS that came up for me were: http://ubuntu-tutorials.com/2008/01/31/changing-the-system-keyboard-mapping-on-ubuntu-dvorak-vs-qwerty/ and http://ubuntuforums.org/archive/index.php/t-31918.html I would probably try: sudo dpkg-reconfigure console-setup I think the layout is on the third screen in that program. -Jason --~--~-~--~~~---~--~~ To post to this group, send email to sage-support@googlegroups.com To unsubscribe from this group, send email to [EMAIL PROTECTED] For more options, visit this group at http://groups.google.com/group/sage-support URLs: http://www.sagemath.org -~--~~~~--~~--~--~---
[sage-support] Dvorak Keyboard
I am running VMware Sage on my Windows box, is there a way to change the keyboard layout that Sage uses from Qwerty to Dvorak? Or would it be located somewhere in the VMware Player software? Or should I just convert to Linux? Thanks, David --~--~-~--~~~---~--~~ To post to this group, send email to sage-support@googlegroups.com To unsubscribe from this group, send email to [EMAIL PROTECTED] For more options, visit this group at http://groups.google.com/group/sage-support URLs: http://www.sagemath.org -~--~~~~--~~--~--~---
[sage-support] Re: can't run a script on when using SAGE on Milnix.org server
Hi, I run the milnix.org server and I just installed the imagemagick program on the server. Should work fine now, sorry about the inconvenience On Sep 18, 9:02 pm, pong <[EMAIL PROTECTED]> wrote: > I have written an animation which runs fine in SAGE on my PC. > However, when I run the same script on Milnix.org server, I got an > error message: > > sh: convert: command not found > > what's the problem? any help? > > Thanks in advance --~--~-~--~~~---~--~~ To post to this group, send email to sage-support@googlegroups.com To unsubscribe from this group, send email to [EMAIL PROTECTED] For more options, visit this group at http://groups.google.com/group/sage-support URLs: http://www.sagemath.org -~--~~~~--~~--~--~---
[sage-support] Re: can't run a script on when using SAGE on Milnix.org server
Hi, I run the milnix.org server and I just installed the imagemagick program on the server. Should work fine now, sorry about the inconvenience. On Sep 18, 9:24 pm, pong <[EMAIL PROTECTED]> wrote: > Thanks for the explanation. It does work in server 2. > > -Pong > > On Sep 18, 6:05 pm, "Mike Hansen" <[EMAIL PROTECTED]> wrote: > > > On Thu, Sep 18, 2008 at 6:02 PM, pong <[EMAIL PROTECTED]> wrote: > > > > I have written an animation which runs fine in SAGE on my PC. > > > However, when I run the same script on Milnix.org server, I got an > > > error message: > > > > sh: convert: command not found > > > > what's the problem? any help? > > > This is because the convert command (from imagemagick) is not > > installed on that system. I have no idea who runs the milnix.org > > server. > > > --Mike --~--~-~--~~~---~--~~ To post to this group, send email to sage-support@googlegroups.com To unsubscribe from this group, send email to [EMAIL PROTECTED] For more options, visit this group at http://groups.google.com/group/sage-support URLs: http://www.sagemath.org -~--~~~~--~~--~--~---
[sage-support] Re: Small Scale Variants of the AES (SR)
> > * I'd be very happy if you'd share your code! I would like to make sure > > that it fits into the current framework/is compatible and reuses the > > existing machinery. Are you doing that? > > I don't think so. What should I do to make my code to fit in the SAGE > framework? Maybe there are some guidelines for developers? The only > link i found was this one http://www.sagemath.org/development.html Hi there, at http://sage.math.washington.edu/home/mhansen/doc-sphinx/SageDevelopersGuide.pdf you'll find a prerelease of the new developer's guide. Some parts are not finished/polished but it should answer at least some questions. My main point however is that the implementation of this functionality should be in crypto/mq/sr.py (i.e. in the classes for SR) and re-use the methods provided there (for consistency). Let me know if you need help. > > * If we're going to support direct representation of ciphertext bits in > > plaintext and key variables we should also support GF(2^n) as base field > > not only GF(2), i.e. BES style equations. This will be slightly more > > involving. > > Anyway I was already thinking of developing a version of my code for > GF(2^n), so I would gladly help with this. Excellent! Cheers, Martin -- name: Martin Albrecht _pgp: http://pgp.mit.edu:11371/pks/lookup?op=get&search=0x8EF0DC99 _www: http://www.informatik.uni-bremen.de/~malb _jab: [EMAIL PROTECTED] --~--~-~--~~~---~--~~ To post to this group, send email to sage-support@googlegroups.com To unsubscribe from this group, send email to [EMAIL PROTECTED] For more options, visit this group at http://groups.google.com/group/sage-support URLs: http://www.sagemath.org -~--~~~~--~~--~--~---
[sage-support] Re: var names
On Fri, Sep 19, 2008 at 6:47 AM, Bob Wonderly <[EMAIL PROTECTED]> wrote: > > After being a few hours into a Sage session I start losing track of all > the vars I have defined. Is there a way to get Sage to list them for me? > > TIA > > Bob You might find the show_identifiers command helpful. It includes a few extra vars you didn't define, but should always list everything you did define. teragon-2:~ was$ sage -- | SAGE Version 3.1.1, Release Date: 2008-08-20 | | Type notebook() for the GUI, and license() for information.| -- sage: show_identifiers() ['fortran', 'Out', 'variables', 'In', 'help', 'view_all', 'attached_files'] sage: a = 10; b = 17; x = 3990230 sage: show_identifiers() ['fortran', 'Out', 'variables', 'In', 'a', 'help', 'view_all', 'b', 'attached_files', 'x'] sage: --~--~-~--~~~---~--~~ To post to this group, send email to sage-support@googlegroups.com To unsubscribe from this group, send email to [EMAIL PROTECTED] For more options, visit this group at http://groups.google.com/group/sage-support URLs: http://www.sagemath.org -~--~~~~--~~--~--~---
[sage-support] Re: bug in limit()
On Fri, Sep 19, 2008 at 3:18 AM, Alex Raichev <[EMAIL PROTECTED]> wrote:
>
> Sweet! Thanks, Mike.
>
> On Sep 19, 11:56 am, "Mike Hansen" <[EMAIL PROTECTED]> wrote:
>> On Thu, Sep 18, 2008 at 4:54 PM, Alex Raichev <[EMAIL PROTECTED]> wrote:
>>
>> > Now, with the above in mind, how do you write a function to evaluate
>> > that sine limit given a variable from the user? We know the following
>> > does not work.
>>
>> > sage: var('x')
>> > x
>> > sage: def limmy(w):
>> > : return limit(sin(w)/w,w=0)
>> > sage: limmy(x)
>> > sin(x)/x
>>
>> > More generally, how do you execute functions requiring keyword
>> > arguments, such as limit(), when you don't know the symbolic variable
>> > names involved (but have references to them)?
>>
>> Here's one way to do it:
>>
>> sage: def limmy(w):
>> : return limit(sin(w)/w,**{str(w):0})
>> :
>> sage: limmy(x)
>> 1
>> sage: limmy(var('w'))
>> 1
>>
>> Not the most elegant, but it works.
Isn't this an argument for not using keyword arguments but variables
directly in things like subs, limit, etc.? I was discussing this
with David Roe at length at Sage Days 6 in Bristol, but I think I
didn't persuade him that using kwargs for this kind of things is evil.
:)
Ondrej
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[sage-support] var names
After being a few hours into a Sage session I start losing track of all the vars I have defined. Is there a way to get Sage to list them for me? TIA Bob Wonderly --~--~-~--~~~---~--~~ To post to this group, send email to sage-support@googlegroups.com To unsubscribe from this group, send email to [EMAIL PROTECTED] For more options, visit this group at http://groups.google.com/group/sage-support URLs: http://www.sagemath.org -~--~~~~--~~--~--~---
[sage-support] Re: Small Scale Variants of the AES (SR)
Hi Martin, Thanks for your reply. Please, see my comments inline. On Sep 18, 12:18 pm, Martin Albrecht <[EMAIL PROTECTED]> wrote: > Hivpv, > > you can certainly post-process the first option to get an equation system in > the plaintext and key variables alone. You'll need an appropriate term > ordering where each layer's head term is bigger than the previous layer's > head term. You'll also replace the S-Box equations by direct equations which > is just the Gröbner basis with this variable order + 'lex'. Finally, you > compute the normal form of each layer w.r.t. the last layer. > > As for the direct generation: > > * I'd be very happy if you'd share your code! I would like to make sure that > it fits into the current framework/is compatible and reuses the existing > machinery. Are you doing that? > I don't think so. What should I do to make my code to fit in the SAGE framework? Maybe there are some guidelines for developers? The only link i found was this one http://www.sagemath.org/development.html > * I'd guess it should be fairly straight forward (for someone knowing the > code of mq.SR) to add what you want: (a) make some type checks more relaxed & > user-friendly and (b) add support for 'variable encryption' by replacing > sr.sub_bytes with a function returning equations. > This will be very useful. For me at least. > * In the upcoming version of Sage (3.1.2) mq.SR generates equation systems in > PolyBoRi if asked to. > > * If we're going to support direct representation of ciphertext bits in > plaintext and key variables we should also support GF(2^n) as base field not > only GF(2), i.e. BES style equations. This will be slightly more involving. > Anyway I was already thinking of developing a version of my code for GF(2^n), so I would gladly help with this. > Cheers, > Martin > > -- > name: Martin Albrecht > _pgp:http://pgp.mit.edu:11371/pks/lookup?op=get&search=0x8EF0DC99 > _www:http://www.informatik.uni-bremen.de/~malb > _jab: [EMAIL PROTECTED] Greetings, vpv --~--~-~--~~~---~--~~ To post to this group, send email to sage-support@googlegroups.com To unsubscribe from this group, send email to [EMAIL PROTECTED] For more options, visit this group at http://groups.google.com/group/sage-support URLs: http://www.sagemath.org -~--~~~~--~~--~--~---
[sage-support] Re: why isn't QQ a FractionField?
On Sep 19, 12:50 am, "William Stein" <[EMAIL PROTECTED]> wrote: > > sage: FormalSum([(1,1/4),(1,-1/5)]) > > -1/5 + 1/4 > > sage: FormalSum([(1,1/4),(1,-1/5)]) == 1/4 - 1/5 > > False > > That could be considered a bug and fixed. I would > be fine with something better, i.e., comparison computing > the value of the formal sum if possible, and comparing them. That would horribly break my group algebras class, which is based on FormalSum. Couldn't one add a method evaluate() to the FormalSum class, so we'd have sage: FormalSum([(1,1/4),(1,-1/5)]) == 1/4 - 1/5 False sage: FormalSum([(1,1/4),(1,-1/5)]).evaluate() == 1/4 - 1/5 True ? David --~--~-~--~~~---~--~~ To post to this group, send email to sage-support@googlegroups.com To unsubscribe from this group, send email to [EMAIL PROTECTED] For more options, visit this group at http://groups.google.com/group/sage-support URLs: http://www.sagemath.org -~--~~~~--~~--~--~---
[sage-support] Re: substitution with callable symbolic functions
On Fri, Sep 19, 2008 at 6:54 AM, Alex Raichev <[EMAIL PROTECTED]> wrote:
>
> Hey all:
>
> I'm back with a follow up question on the topic of substitution in
> Sage. How can i work the following example? I have an expression
> that involves the derivative of a function, and into that expression i
> want to substitute the value of the derivative. Simple, eh? I tried
> Mike's ** trick and variations thereof, but that doesn't seem to work:
>
> sage: var('x,y')
> (x, y)
> sage: f= function('y',x)
> sage: g= diff(f,x)
> sage: h= diff(f^2,x)
> sage: print h
>
> d
> 2 y(x) (-- (y(x)))
> dx
>
> sage: print h.substitute(**{str(g):cos(x)})
Use:
sage: h.subs_expr(g == cos(x))
2*cos(x)*y(x)
I think this subs, subs_expr and substitute is very confusing in Sage,
at least to me.
Ondrej
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