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It is possible to use MAPLE as a front end
to BERNINA, provided that
the BERNINA executable is in your path and that the file bernina.m
is in the MAPLE library path (you can use the libname variable within
MAPLE to ensure the latter). After loading the MAPLE-BERNINA interface
via the with(bernina) command, the following functions are available:
adjoint, apply,
decompose, dfactor,
Darboux,
eigenring, exponentialSolutions, exteriorPower,
leftGcd, leftLcm, Loewy,
makeIntegral, normalize,
polynomialKernel,
polynomialSolution,
radicalSolutions,
rationalKernel, rationalSolution,
rightGcd, rightLcm, rightQuotient,
symmetricKernel
and symmetricPower. Except for the exception noted below, those functions take the
same arguments than their BERNINA analogues, plus the two symbols
and that you use for the derivation and independent variable
respectively. For example, where you would use
-> L12 := symmetricPower(D^2 - x, 12)
in BERNINA, use
> L12 := symmetricPower(D^2 - x, 12, D, x)
from within MAPLE.
See the sample MAPLE worksheet that is provided with BERNINA for
more details. Note that in order not to conflict with the
factor and linalg[kernel] functions in MAPLE,
the functions factor and kernel
of BERNINA are provided under MAPLE under the names
dfactor,
polynomialKernel and rationalKernel.
The
exception
to the parameter-passing rule
is
Darboux,
for which in addition to the and symbols as parameters,
you must provide a third symbol , to be used as dependent variable
for the bivariate polynomials produced.
Note also that the functions
decompose, dfactor,
eigenring, exponentialSolutions,
polynomialSolution,
radicalSolutions and rationalSolution
do some additional processing of the output of BERNINA
when called from within MAPLE (see the corresponding reference
pages for details).
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Manuel Bronstein
2002-09-04