Iosifidis & Hehl (2024) state, in their own words, that they are first to show hypermomentum breaks the Geometric Trinity's equivalence — while naming Wolf & Read (2023) as their target and building on an existing equation-of-motion lineage

physicsphilosophy-of-physicsgravitygauge-theoryhypermomentumgeometric-trinitypriorityhistoriography

Damianos Iosifidis and Friedrich W. Hehl's 2024 Physics Letters B paper derives the equations of motion of a test particle carrying intrinsic hypermomentum in a spacetime with torsion and nonmetricity, then applies the result against the Geometric Trinity's equivalence claim. The paper states its own novelty explicitly — it will "point out, for the first time, that this 'trinity' claim is unjustified for all" practical purposes once equations of motion are taken into account — and this is a direct Tier 1, primary-source confirmation of the "explicit... by Iosifidis and Hehl [2024]" half of Kartik Tiwari's priority claim: the 2024 paper claims this priority itself, not merely as later characterized by a third party.

Two qualifications narrow what "first" means here. First, the paper names its specific target: William J. Wolf and James Read's 2023 "The Non-Relativistic Geometric Trinity of Gravity," which argued the three theories "are equivalent up to a total divergence term"; Iosifidis & Hehl call that statement "misleading." Second, the equation-of-motion method itself is not new in 2024 — the paper states its results are "consistent with earlier ones derived by Obukhov and Puetzfeld (2014) by means of a different method," and traces the program back through Ne'eman & Hehl (1997) to Hehl's own 1971 work. What the 2024 paper originates is the explicit application of that pre-existing machinery against the 2019-coined Geometric Trinity claim and its 2023 restatement — not the equation-of-motion technique underlying it.