Hi, there seems to be a problem with inverses of matrices with elements in
RR. It only occurs very sporadically for me, but here is an example:
a = RR(-4967757600021511 / 2**106)
b = RR(-7769080564883485 / 2**52)
c = RR( 5221315298319565 / 2**53)
m = matrix([[a, b], [c, -a]])
print(m)
print()
p
avoid building gcc. You don't need it. Read advice on packages printed by
./configure at the end of run, and follow it.
I'd give you more details over a teams or google meet call.
(Bruno is one of our 3rd year students I advise this year).
Dima
On Fri, 4 Nov 2022, 18:29 'bruno edwards' via sage-
