#5396: Wrapping lcalc library
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Reporter: rishi | Owner: Rishi
Type: enhancement | Status: positive_review
Priority: major | Milestone: sage-4.3.1
Component: number theory | Keywords: lcalc
Work_issues: | Author: rishi, ylchapuy
Upstream: N/A | Reviewer: John Cremona
Merged: |
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Comment(by rishi):
I did not check my email in the last 24 hours. Yes the derivatives will
not be accurate. In fact it gets progressively wrong with higher
derivatives. I will add a patch later to add to documentation to this
fact. The derivative is calculated by calculating L function at two points
very close and using the definition of derivative. It is not accurate at
all.
The following error message is from lcalc library. It is debugging info
which Mike uses when things go wrong.
{{{
----------------------------------------------
Name of L_function:
number of dirichlet coefficients = 5
coefficients are periodic
b[1] = 1
b[2] = -1
b[3] = -1
b[4] = 1
b[5] = 0
Q = 1.26156626101
OMEGA = (1,4.96506830649e-17)
a = 1 (the quasi degree)
gamma[1] =0.5 lambda[1] =(0,0)
number of poles (of the completed L function) = 0
-----------------------------------------------
}}}
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Ticket URL: <http://trac.sagemath.org/sage_trac/ticket/5396#comment:34>
Sage <http://www.sagemath.org>
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