Evaluates lensing parity predictions in lensing dynamics, indicating significant mass boost implications.
CDN-229 converts the CDN-228 fixed SPARC rotation response into a lensing-parity contract. On the held-out half, the spherical-equivalent response implies median required lensing mass boost M_dyn/M_bar = 2.650 and median response fraction M_Xi/M_dyn = 0.623. The result is not an observed lensing pass; it locks the required prediction that the response contribution must lens through the same potential that supplies the extra circular-speed support.
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Nicky Joseph Hubertus Catharina Hacquier (2026) studied this question.
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