CVXR (version 1.0-14)

curvature-atom: Curvature of an Atom

Description

Determine if an atom is convex, concave, or affine.

Usage

is_atom_convex(object)
is_atom_concave(object)
is_atom_affine(object)
# S4 method for Atom
is_atom_convex(object)
# S4 method for Atom
is_atom_concave(object)
# S4 method for Atom
is_atom_affine(object)
# S4 method for Atom
is_atom_log_log_convex(object)
# S4 method for Atom
is_atom_log_log_concave(object)
# S4 method for Atom
is_atom_log_log_affine(object)

Value

A logical value.

Arguments

object

A Atom object.

Examples

x <- Variable()

is_atom_convex(x^2)
is_atom_convex(sqrt(x))
is_atom_convex(log(x))

is_atom_concave(-abs(x))
is_atom_concave(x^2)
is_atom_concave(sqrt(x))

is_atom_affine(2*x)
is_atom_affine(x^2)