ASKSAGE: Sage Q&A Forum - RSS feedhttps://ask.sagemath.org/questions/Q&A Forum for SageenCopyright Sage, 2010. Some rights reserved under creative commons license.Sat, 01 Sep 2018 02:16:47 +0200Saturated chainshttps://ask.sagemath.org/question/43545/saturated-chains/ I know there is a command to take all maximal chains and all cover relations of a poset. I am working with a ranked poset and I am wondering if there is a command for all saturated chains in a poset. I appreciate any help given.StivenSat, 01 Sep 2018 02:16:47 +0200https://ask.sagemath.org/question/43545/Noncommuting variableshttps://ask.sagemath.org/question/7784/noncommuting-variables/I am extremely new to Sage, and even newer to this site, so I apologize if anything is not up to standards.
I am dealing with a multivariable polynomial ring over $\mathbb{Z}$ with noncommuting variables. Is there a way to implement this with Sage? The closest thing I have found is FreeAlgebra, where the variables are noncommutative, but I have not found any way to impose relations that I want.
As stated before, I am extremely new to all of this so don't assume that I know anything, and don't hesitate to give any and all suggestions.Eric A BunchMon, 06 Dec 2010 21:53:32 +0100https://ask.sagemath.org/question/7784/Characters and number fieldshttps://ask.sagemath.org/question/7734/characters-and-number-fields/Hello!
I have again a question. Could you help me? I defined the Q(6th primitive unity) by
A=DirichletGroup(7)
K.<a>=NumberField(cyclotomic_polynomial(6))
R=K.maximal_order()
Then I take a character, namely
character=A[1]
print character(3)
This character(3) is zeta6, so I would think that the following should be true:
character(3) in R.fractional_ideal(a)
But it is false, I think because we defined Q(6th primitive unity) without using zeta6.
Mathemathically this is true, so could you help me to persuade the computer to recognize
such a relation? Thank you! :-)KatikaTue, 19 Oct 2010 11:22:52 +0200https://ask.sagemath.org/question/7734/How do I define a piecewise function?https://ask.sagemath.org/question/7709/how-do-i-define-a-piecewise-function/[http://en.wikipedia.org/wiki/Piecewise][1]
[1]: http://en.wikipedia.org/wiki/PiecewiseccanoncSat, 25 Sep 2010 15:04:52 +0200https://ask.sagemath.org/question/7709/How does sage deal with choosing branches? Examples?https://ask.sagemath.org/question/7710/how-does-sage-deal-with-choosing-branches-examples/[http://en.wikipedia.org/wiki/Principal\_branch][1]
[http://en.wikipedia.org/wiki/Exponentiation#Failure\_of\_power\_and\_logarithm\_identities][2]
[1]: http://en.wikipedia.org/wiki/Principal_branch
[2]: http://en.wikipedia.org/wiki/Exponentiation#Failure_of_power_and_logarithm_identitiesccanoncSat, 25 Sep 2010 15:34:50 +0200https://ask.sagemath.org/question/7710/