How to express this expression in cvx?

[Mark_L_Stone]

Generalizing "trace_inv" for matrix quadratic forms

The essence of trace_inv for real X is cvx_begin sdp variable Y(n,n) symmetric minimize(trace(Y)); [Y,eye(n);eye(n),X] >= 0; cvx_end So how about modifying the Schur complement action in the SDP as follows i(n sdp mode): minimize(trace(Y)) [Y C;C' A] >= 0; I think this should work.