xTras
Package Symbol
SingleInvariants
InvarLagrangian
RiemannSimplification
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xTras package
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ProductInvariants
ProductInvariants[
g
,
order
]
gives all products of single invariants of the Riemann tensor at
order
in derivatives of the metric
g
.
MORE INFORMATION
A single invariant is a monomial of Riemann tensors.
The second argument
order
has standard level specitification.
The
Invar
database must be installed in order for ProductInvariants to work correctly. It can be downloaded from
http://www.xact.es/Invar/
.
The following options can be given:
IncludeDuals
False
whether to include dual invariants or not.
EXAMPLES
CLOSE ALL
Basic Examples
(1)
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SEE ALSO
SingleInvariants
InvarLagrangian
RiemannSimplification
MORE ABOUT
xTras package