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2017-03-15 20:09:38 +0100 received badge  Famous Question (source)
2016-12-01 08:30:52 +0100 commented question Kernel dies when working with hyperplane arrangement

No, only this function. I made mistake, version of Sage is 7.4

2016-12-01 08:26:35 +0100 received badge  Editor (source)
2016-11-30 20:25:12 +0100 asked a question Kernel dies when working with hyperplane arrangement

Following function causes kernel restart on any usage of "ha" (Sage 7.4, VirtualBox in Windows7 x64):

 def f(n):
    pos_vectors = [[1, 1, 1, 1], [1, -1, 1, 1], [1, 1, -1, 1], [1, -1, -1, 1], [1, 1, 1, -1], [1, -1, 1, -1], [1, 1, -1, -1], [1, -1, -1, -1]]
    HA = HyperplaneArrangements(QQ, tuple("x" + str(i) for i in range(n)))
    ha = HA([[tuple(vector), 0] for vector in pos_vectors])
    print(ha.n_regions())

f(4)

Too simple use case for bug. Is there something that I miss?

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2016-06-19 22:47:41 +0100 answered a question VM Virtualbox & sage-7.2.ova: how to start?

On page with tabs "Files", "Running", "Clusters" in VM select tab "Files", and push button "New", then "SageMath 7.2"

2016-06-19 20:57:59 +0100 asked a question VM Virtualbox & sage-7.2.ova: how to start?

I downloaded and loaded sage-7.2.ova, opened localhost:8000/edit/notebook-browser, but do not know what to do next. There is no command "Run" or something like that.