Status
Proved for declared pure-adjoint complex.
Statement
Arbitrary screening data built from the
For
Adjoint weights lie in the root lattice and therefore represent zero in this quotient. Tensor products, subrepresentations, conjugates, differentials, and fusion operations within the admitted adjoint complex preserve that zero grading. They cannot supply the charge
Example (illustrative)
Adding any number of gluonic adjoint labels still yields total center charge zero. They may reorganize local gauge data, but they cannot turn a sector of center charge one into the neutral sector.
Scope and limits
This is a pure-gauge statement. Adding matter of nonzero
Source
Phenomenological Implications I, §3.3, Proposition 3.5.