Hi Steve, The documentation of PARI's group labelling/naming conventions is here (there are an "old" and a "new" convention, and Sage uses the new one):
http://pari.math.u-bordeaux.fr/dochtml/html.stable/Functions_related_to_general_number_fields.html#polgalois I don't see 2^n S_n mentioned here; I guess that is taken from the string returned as the last component by polgalois(), and the documentation agrees with Dima that this is the name of the group in GAP. Peter Op vrijdag 15 augustus 2014 06:35:22 UTC+1 schreef s meagher: > > Apologies if this is answered elsewhere in this group or in the > documentation, but I have not found the answer. > > When computing a galois group in sage using type='pari' Sage gives the > group a name. I have not been able to find a guide for the nomenclature > used. > > For example, names like S_3 and D(4) are fairly clear. But what is 2^3 > S_3 and 2^4 S_4 - I presume they are the wreath products (\Z/2)^n . S_n. > > Is there a reference? And am I right about 2^n S_n > > Thanks > > Steve > -- You received this message because you are subscribed to the Google Groups "sage-support" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. To post to this group, send email to [email protected]. Visit this group at http://groups.google.com/group/sage-support. For more options, visit https://groups.google.com/d/optout.
