curvature-comp function

Curvature of Composition

Determine whether a composition is non-decreasing or non-increasing in an index.

is_incr(object, idx)

is_decr(object, idx)

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

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

Arguments

• object: A Atom object.
• idx: An index into the atom.

Returns

A logical value.

Examples

x <- Variable()
is_incr(log(x), 1)
is_incr(x^2, 1)
is_decr(min(x), 1)
is_decr(abs(x), 1)