matrix_trace: Trace of a square matrix expression

In CVXR: Disciplined Convex Optimization

Trace of a square matrix expression

Description

For matrix_trace(A %*% B), uses the O(n^2) identity trace(A %*% B) = sum(A * t(B)) instead of forming the full matrix product.

Usage

matrix_trace(x)

Arguments

x	An Expression (square matrix)

Value

A Trace atom or equivalent expression (scalar)

CVXR documentation built on Aug. 24, 2026, 9:10 a.m.