Full Idea
When a judgement occurs, there is a certain complex entity, composed of the mind and the various objects of the judgement.
Gist of Idea
A judgement is a complex entity, of mind and various objects
Source
B Russell/AN Whitehead (Principia Mathematica [1913], p.44)
Book Reference
Morris,Michael: 'Guidebook to Wittgenstein's Tractatus' [Routledge 2008], p.83
A Reaction
This is Russell's multiple-relation theory of judgement, which replaced his earlier belief in unified propositions (now 'false abstractions'). He seems to have accepted Locke's view, that the act of judgement produces the unity.