The phrase "a split of authority" is correct and usable in written English.
It can be used in contexts discussing differing opinions or interpretations of legal or organizational power among different authorities or jurisdictions.
Example: "The court faced a split of authority regarding the interpretation of the statute, leading to confusion among lower courts."
Alternatives: "a division of authority" or "a conflict of authority".
Here we have a split of authority.
There is for example a split of authority on whether the work-product rule applies to IRS tax investigations.
Because of a split of authority regarding the meaning of §1512(b), we granted certiorari.7 543 U.S. (2005).
However, there is a split of authority regarding what role a financial institution must play in the transaction for the safe harbor to apply.
We granted certiorari to resolve a split of authority on the question whether §1447 d) bars review of remand orders in cases removed under the Act,6 546 U. S. ___ (2006), and we now vacate for want of jurisdiction on the part of the Court of Appeals.
The first mechanism is a split of authority.
And yet, joining the Tenth Circuit and widening an existing split of authority, the Second Circuit held that a bare preference for the politically connected insiders is constitutionally kosher.
Because the choice between these two default rules can be outcome determinative in cases with hundreds of millions of dollars at stake, there is an urgent need to resolve the split of authority and ensure uniformity across the federal courts.
For example, in Cambridgeshire, the Commission outlined three options for a split of the county into unitary authorities, the preferred option being a three-way split between the "City & County of Cambridge" (consisting of Cambridge, South Cambridgeshire, East Cambridgeshire), Huntingdonshire and Peterborough & The Fens.
This split of authority "avoids the inconvenience of making the same persons both accusers and judges; and guards against the danger of persecution from the prevalency of a factious spirit in either of those branches". The second safeguard is the two-thirds supermajority vote requirement.
There is no resolution in sight for the split of authority between Gaza and the West Bank.
