Would it be possible to add a post-maxima check to ensure the answers are in
the same domain as the inputs?
Joal Heagney
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Since GP/PARI default precision is 38 (on my system)
(and I dont know how to set \p 100 from sage)
it would be probably better to replace
precision_digits=30
by
precision_digits=38
On 30 Mar, 23:03, achrzesz achrz...@wp.pl wrote:
# NO WARRANTY
precision_digits=30
nop=5 # rank of matrix
#NOT CHECKED
precision_digits=100
nop=5 # rank of matrix
MS_nop_comp=MatrixSpace(ComplexField(precision_digits),nop,nop)
tmat=MS_nop_comp(0) # zero-ize the values
ttdag=MS_nop_comp(0)
for a in range(nop):
for b in range(nop):
tmat[a,b]=random()+I*random()
Compare such version
precision_digits=100
nop=5 # rank of matrix
MS_nop_comp=MatrixSpace(ComplexField(precision_digits),nop,nop)
tmat=MS_nop_comp.random_element()
ttdag=tmat*tmat.conjugate().transpose()
m=gp(ttdag)
gp('default(realprecision,100)')
ev=gp.mateigen(m).sage()
print ev[:-1]
On 31
On 03/31/11 05:44 AM, Roy Joshua wrote:
Hi,
I tried the suggestion to use the command
SAGE64=yes
export SAGE64
that was suggested as response to my last message by David Kirkby.
(My last message was that I could not install sage-4.6.2 to a machine
running Centos 5.5. This is a 64 bit machine
Hi all,
Is it possible to call up the calendar date and time, to be used in,
for instance, m=list(measurement,date) ?
TIA
Claude.
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This could be useful:sage: import datetime
sage: datetime.datetime.now()
datetime.datetime(2011, 3, 31, 9, 13, 0, 932345)
And there are lots of methods and string formatting one can do.
See http://www.saltycrane.com/blog/2008/06/how-to-get-current-date-and-time-in/
But I'm sure there are even
Thanks for the implementation. It would have taken me a long time to
figure that out. It appears the ev (eigenvectors) are returned, with
the last one being normalized to have entries of unity.
On Mar 31, 5:32 am, achrzesz achrz...@wp.pl wrote:
Compare such version
precision_digits=100
nop=5
sage: import time
sage: time.asctime(time.localtime())
'Thu Mar 31 15:36:30 2011'
On 31 Mar, 15:15, kcrisman kcris...@gmail.com wrote:
This could be useful:sage: import datetime
sage: datetime.datetime.now()
datetime.datetime(2011, 3, 31, 9, 13, 0, 932345)
And there are lots of methods and
On Thu, 31 Mar 2011 at 05:36AM -0700, clodemil wrote:
Is it possible to call up the calendar date and time, to be used in,
for instance, m=list(measurement,date) ?
Python (and hence Sage) has a number of modules related to times and
dates. See http://docs.python.org/library/ and search for time
On 03/31/11 05:44 AM, Roy Joshua wrote:
Hi,
I tried the suggestion to use the command
SAGE64=yes
export SAGE64
that was suggested as response to my last message by David Kirkby.
(My last message was that I could not install sage-4.6.2 to a machine
running Centos 5.5. This is a 64 bit machine
dl'd sage-4.6.1-linux-64bit-fedora_release_13_goddard_-x86_64-Linux.tar.lzma
, but get an undefined symbol when running it the first time,
ImportError: /usr/lib64/libstdc++.so.6: version `GLIBCXX_3.4.14' not found
(required by /opt/sage-4.6.1/local/lib/python2.6/site-
Hello,
I recently upgraded sage to the binary version 4.6.2 for Ubuntu i586,
and ran into the following error:
sage: (r,s,t,c,d,p,q) = var( 'r,s,t,c,d,p,q' )
sage: A = matrix( [ [r, -s, r, -s], [t, 0, t-p, -p], [r, -s-c, r, -s-d], [t,
-c, t-q, -q-d] ] )
sage: A
[ r -s r -s]
hi, I try to check the src code of some function, for example gcd -- and
in the src implementation I see references to mpz_gcd . What is mpz_*
? and how can I find it src code ? thanks
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On Mar 31, 2011, at 14:45 , tvn wrote:
hi, I try to check the src code of some function, for example gcd -- and
in the src implementation I see references to mpz_gcd . What is mpz_*
? and how can I find it src code ? thanks
Sounds like one of the multiprecision integer
On Friday 01 April 2011, Justin C. Walker wrote:
On Mar 31, 2011, at 14:45 , tvn wrote:
hi, I try to check the src code of some function, for example gcd --
and in the src implementation I see references to mpz_gcd . What is
mpz_* ? and how can I find it src code ? thanks
It was reported before that this build is mislabeled and probably for F14.
You might want to compile the current version (Sage-4.6.2) from source.
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