Three-index tensor for containing information on RPV couplings. More...

#include <tensor.h>

Public Member Functions
	Tensor ()

	Tensor (const Tensor &)
	Constructor sets object to be equal to another.

void	threecheck (const DoubleMatrix &, const DoubleMatrix &, const DoubleMatrix &)
	Checks that the three input matrices have dimension 3x3.

double &	operator() (int, int, int)
	References a single element of the tensor.

DoubleMatrix &	operator() (int)
	References a single matrix of the tensor.

const DoubleMatrix &	display (int) const
	Returns a single matrix of the tensor.

double	display (int, int, int) const
	Returns a single element of the tensor.

void	checkOut (double) const

void	set (int i, int j, int k, double f)
	Sets a single element of tensor \( T_{ijk} \)=f.

DoubleVector	trace (int) const
	Does \( V^i = T^{jij} \) where the input l is the position of i in T.

Tensor	transpose () const
	Transposes each matrix held in the tensor.

DoubleMatrix	dotProd (const DoubleVector &v, int i) const

Tensor	operator* (double) const
	Multiplies all matrices in tensor by a double.

Tensor	operator/ (double) const
	Divides all matrices in tensor by a double.

Tensor	operator* (const DoubleMatrix &) const
	\( T^{ijk} = T^{ijl} M_{lk} \)

Tensor	operator+ (const Tensor &) const
	Adds all matrices between two tensors.

Tensor	operator- (const Tensor &) const
	Subtracts all matrices between two tensors.

Tensor	product (const DoubleMatrix &) const
	Does \( T^{ijk} = T^{ljk} M_{li} \).

Tensor	swap (int)
	Swaps the other indices apart ith one eg i=1: \( {T^{ijk}}'=T^{ikj} \).

Tensor	raise (const DoubleMatrix &M) const
	\( T^kij=M^kl T^lij \)

Detailed Description

Three-index tensor for containing information on RPV couplings.

Constructor & Destructor Documentation

◆ Tensor()

Tensor::Tensor ( )

Constructor fills object with zeroes by default

Member Function Documentation

◆ checkOut()

void Tensor::checkOut ( double tol ) const

outputs tensors to standard input IF they're elements sum to more than tol

◆ dotProd()

DoubleMatrix Tensor::dotProd	(	const DoubleVector &	v,
		int	i
	)		const

Outputs \( T^{ijk} V_i \) summing over ith (1st 2nd or 3rd) index. eg i=1: \( M_{ij} = T^{kij} V_k \) 2: \( M_{ij} = T^{jki} V_k \) 3: \( M_{ij} = T^{ijk} V_k \) so the matrix indices are just in order from L-R AFTER summed index.

The documentation for this class was generated from the following files: