Re: [sage-support] SageMath 8.9 crashing on ubuntu 18.04.3 LTS

2019-12-24 Thread Hassan Mostafa
it is worked. many thanks. On Tuesday, December 24, 2019 at 10:13:18 AM UTC+2, Jan Groenewald wrote: > > Hi > > Try > > sudo chown -R hassan:hassan /home/hassan/.sage > > then try run sage as hassan (not sudo) again. > > Regards, > Jan > > On Tue, 24 Dec

[sage-support] SageMath 8.9 crashing on ubuntu 18.04.3 LTS

2019-12-23 Thread Hassan Mostafa
'commit_source': 'installation', 'default_encoding': 'UTF-8', 'ipython_path': '/home/hassan/SageMath/local/lib/python2.7/site-packages/IPython', 'ipython_version': '5.8.0', 'os_name': 'posix'

[sage-support] is_strongly_connected bug for directed graphs

2012-04-12 Thread Samah Mohamed Osman Hassan Taha
Hi sage: d1 = DiGraph({0:[1,2],1:[2],2:[1,0]}) sage: d1.is_strongly_connected() True This graph should be connected but not strongly connected, by http://en.wikipedia.org/wiki/Directed_graph#Digraph_connectivity Or does Sage define strongly connected for digraphs differently? Regards, Samah --

[sage-support] Re: MixedIntegerLinearProgram solver

2009-12-10 Thread Hassan
On Dec 10, 10:45 am, Nathann Cohen wrote: > I was a bit worried about it :-) > > You will find everything about the current Alpha there > :http://groups.google.com/group/sage-release/browse_thread/thread/0020... > > Please remember to use the last versions of the spkg in this case -- > i.e. the o

[sage-support] Re: MixedIntegerLinearProgram solver

2009-12-09 Thread Hassan
Installing the former version result: --- AttributeErrorTraceback (most recent call last) /home/hassan/ in () /home/hassan/Apps/sage-4.2.1/local/lib/python2.6/site-packages/sage/ numerical/mip.so

[sage-support] MixedIntegerLinearProgram solver

2009-12-09 Thread hassan
ost recent call last) /home/hassan/ in () /home/hassan/Apps/sage-4.2.1/local/lib/python2.6/site-packages/sage/numerical/mip.so in sage.numerical.mip.MixedIntegerLinearProgram.solve (sage/numerical/mip.c:5059)() /home/hassan/Apps/sage-4.2.1/local/lib/python2.6/site-packages/sage/nume