Full Idea
A weaker form of relativism holds that developments in logic, in maths and in geometry have shown how a relativised notion of the a priori is possible.
Gist of Idea
Maybe developments in logic and geometry have shown that the a priori may be relative
Source
Paul O'Grady (Relativism [2002], Ch.4)
Book Reference
O'Grady,Paul: 'Relativism' [Acumen 2002], p.90
A Reaction
This is non-Euclidean geometry, and multiple formalisations of logic. Personally I don't believe it. You can expand these subjects, and pursue whimsical speculations, but I have faith in their stable natural core. Neo-Platonism.