grapes-less-than-less-than-grapes: Negative Semidefinite Constraint Operator

In CVXR: Disciplined Convex Optimization

Negative Semidefinite Constraint Operator

Description

Creates an NSD constraint: e2 - e1 is positive semidefinite, i.e., e1 is NSD relative to e2. This is the R equivalent of Python's A << B.

Usage

e1 %<<% e2

Arguments

e1, e2

CVXR expressions or numeric matrices.

Value

A PSD constraint object.

See Also

PSD()

Examples

## Not run: 
X <- Variable(3, 3, symmetric = TRUE)
constr <- X %<<% diag(3)  # I - X is PSD (X is NSD relative to I)

## End(Not run)

CVXR documentation built on March 6, 2026, 9:10 a.m.