Re: [sage-support] Problem of Sage 9.0 and Maxima powerseries

2020-03-24 Thread luis mendes
and why it worked in previous versions. > > Le 24/03/2020 à 14:13, mendes a écrit : > > Dear all, > > > > In previous versions of Sagemath, this worked fine: > > > > f= 1/(1-x) > > print( maxima(f,x).powerseries(x,0) ) > > > > Now, in Sage 9.0,

[sage-support] Problem of Sage 9.0 and Maxima powerseries

2020-03-24 Thread mendes
Dear all, In previous versions of Sagemath, this worked fine: f= 1/(1-x) print( maxima(f,x).powerseries(x,0) ) Now, in Sage 9.0, this raises the error: TypeError: new_name must be a string I would be very grateful for any help. -- You received this message because you are subscribed to the

[sage-support] sage 9.0: numerical_integral of unit_step()

2020-01-21 Thread mendes
Dear all, In previous versions of Sage I was able to do very quickly some * numerical* integrations involving unit_step(t) function . But, in the last updates (8.9 and 9.0) , it takes 6 times longer to do the numerical integral of convolution with unit_step(), than to do the same oper

[sage-support] Re: sage 9.0: mismatch in sr-to-maxima translation

2020-01-19 Thread mendes
Thank you Bruin and Kcrisman, for your attention. The following codes are examples of the problem: # fg denotes the convolution product f*g. The expected result is f*g = 0, if t < 1 and f*g = t^2/2-t+1/2, if t > 1. # For 0 < t < 1, it runs ok: var('x,t') assume(01, there is a RuntimeError: mis

[sage-support] sage 9.0: mismatch in sr-to-maxima translation

2020-01-18 Thread mendes
Dear all, In previous versions of Sagemath, I was able to do perfectly the (symbolic) integration of functions like unit_step( ), for example when doing symbolic convolutions.But in the latest versions of Sagemath (like 8.9 and the updated 9.0) the following message appears:*RuntimeErr