DivExpression-class: The DivExpression class.

In CVXR: Disciplined Convex Optimization

The DivExpression class.

Description

This class represents one expression divided by another expression.

Usage

## S4 method for signature 'Expression,Expression'
e1 / e2

## S4 method for signature 'Expression,ConstVal'
e1 / e2

## S4 method for signature 'ConstVal,Expression'
e1 / e2

## S4 method for signature 'DivExpression'
to_numeric(object, values)

## S4 method for signature 'DivExpression'
is_quadratic(object)

## S4 method for signature 'DivExpression'
is_qpwa(object)

## S4 method for signature 'DivExpression'
dim_from_args(object)

## S4 method for signature 'DivExpression'
is_atom_convex(object)

## S4 method for signature 'DivExpression'
is_atom_concave(object)

## S4 method for signature 'DivExpression'
is_atom_log_log_convex(object)

## S4 method for signature 'DivExpression'
is_atom_log_log_concave(object)

## S4 method for signature 'DivExpression'
is_incr(object, idx)

## S4 method for signature 'DivExpression'
is_decr(object, idx)

## S4 method for signature 'DivExpression'
graph_implementation(object, arg_objs, dim, data = NA_real_)

Arguments

e1, e2	The Expression objects or numeric constants to divide. The denominator, e2, must be a scalar constant.
object	A DivExpression object.
values	A list of arguments to the atom.
idx	An index into the atom.
arg_objs	A list of linear expressions for each argument.
dim	A vector representing the dimensions of the resulting expression.
data	A list of additional data required by the atom.

Methods (by generic)

• to_numeric(DivExpression): Matrix division by a scalar.

• is_quadratic(DivExpression): Is the left-hand expression quadratic and the right-hand expression constant?

• is_qpwa(DivExpression): Is the expression quadratic of piecewise affine?

• dim_from_args(DivExpression): The (row, col) dimensions of the left-hand expression.

• is_atom_convex(DivExpression): Division is convex (affine) in its arguments only if the denominator is constant.

• is_atom_concave(DivExpression): Division is concave (affine) in its arguments only if the denominator is constant.

• is_atom_log_log_convex(DivExpression): Is the atom log-log convex?

• is_atom_log_log_concave(DivExpression): Is the atom log-log concave?

• is_incr(DivExpression): Is the right-hand expression positive?

• is_decr(DivExpression): Is the right-hand expression negative?

• graph_implementation(DivExpression): The graph implementation of the expression.

CVXR documentation built on Oct. 31, 2022, 1:07 a.m.