Full Idea
A problem for the neo-Fregeans is that it has not proved easy to establish that Hume's Principle is analytic or definitive in the required sense.
Gist of Idea
It is not easy to show that Hume's Principle is analytic or definitive in the required sense
Source
Carrie Jenkins (Grounding Concepts [2008], 4.3)
Book Reference
Jenkins,Carrie: 'Grounding Concepts' [OUP 2008], p.118
A Reaction
It is also asked how we would know the principle, if it is indeed analytic or definitional (Jenkins p.119).