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      accessed internally when \code{diag} is \code{"U"} (but need to be
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      accessed internally when \code{diag} is \code{"U"} (but need to be
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      allocated, i.e., \code{length(x)} does not depend on \code{diag}).}
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      allocated, i.e., \code{length(x)} does not depend on \code{diag}).}
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    %% below {Dim, Dimnames} work around Slot parsing buglet (< 2.2.0)
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    %% below {Dim, Dimnames} work around Slot parsing buglet (< 2.2.0)
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    \item{\code{Dim, Dimnames}:}{The dimension (a length-2
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    \item{\code{Dim, Dimnames}:}{The dimension (a length-2
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      \code{"integer"}) and corresponding names (or \code{NULL}),
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      \code{"integer"}) and corresponding names (or \code{NULL}),
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      inherited from the \code{\link{Matrix-class}}, see there.}
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      inherited from the \code{\linkS4class{Matrix}}, see there.}
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  }
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  }
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}
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}
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\section{Extends}{
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\section{Extends}{
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  Class \code{"Matrix"}, directly.
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  Class \code{"Matrix"}, directly.
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}
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}
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  called by the internal validity checking functions.
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  called by the internal validity checking functions.
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  %% Currently:
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  %% Currently:
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  %% No methods defined with class "triangularMatrix" in the signature.
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  %% No methods defined with class "triangularMatrix" in the signature.
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}
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}
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\seealso{
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\seealso{
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  \code{\link{symmetricMatrix-class}}, and, e.g.,
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  Classes \code{\linkS4class{symmetricMatrix}}, and, e.g.,
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  \code{\link{dtrMatrix-class}} for numeric \emph{dense} matrices, or
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  \code{\linkS4class{dtrMatrix}} for numeric \emph{dense} matrices, or
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  \code{\link{ltCMatrix-class}} for a logical \emph{sparse} matrix
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  \code{\linkS4class{ltCMatrix}} for a logical \emph{sparse} matrix
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  subclass of \code{"triangularMatrix"}.
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  subclass of \code{"triangularMatrix"}.
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}
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}
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\examples{
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\examples{
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showClass("triangularMatrix")
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showClass("triangularMatrix")
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