Dear Shubh, In GAP 4.4.12 (and in GAP 4.5) there is currently no function to check that a monoid is unit regular. It is not surprising that the IsUnitRegularSemigroup does not work, as this was not the name of a function in GAP when you wrote your email. I have added a function called IsUnitRegularSemigroup to the development version of the Citrus package for GAP 4.5, and this will be available in the next release of Citrus.
Regards, James On 17 May 2012 06:30, sh...@iitg.ernet.in <sh...@iitg.ernet.in> wrote: > > Dear Sir, > > I have been using GAP4, Version: 4.4.12. Please tell me, If there is any > code for Unit Regular Semigroup in GAP. That means, can we give a code in > GAP to tell whether a semigroup is Unit Regular or not. > > I tried with the code: > >> IsUnitRegularSemigroup(s); which is not working. > > I would be very grateful if you could help me with this query. > > > With Regards, > \-Shubh > > > -- > Shubh N. Singh > Research Scholar > Department of Mathematics > IIT Guwahati - 781039 > Email: sh...@iitg.ernet.in > Mob. no.: +91-9864221370 > > > > > _______________________________________________ > Forum mailing list > Forum@mail.gap-system.org > http://mail.gap-system.org/mailman/listinfo/forum -- James Mitchell tinyurl.com/jdmitchell The University of St Andrews is a charity registered in Scotland : No SC013532 _______________________________________________ Forum mailing list Forum@mail.gap-system.org http://mail.gap-system.org/mailman/listinfo/forum
