Rahim Iqbal
Primary-literature review, problem-status repair, and formal verification work around Kerr geometry.
K-608 — literature closure
Rahim submitted the audit that closed K-608 as solved in the literature for the slowly rotating Kerr-de Sitter regime. The underlying nonlinear-stability theorem belongs to Hintz and Vasy, with a later proof by Fang; the contribution here was identifying the exact match, tightening the scope, recording the primary references, and separating still-open descendants.
K-505 — documented partial advance
An attempted solution of the separated Teukolsky threshold-classification problem produced a defensible literature map rather than a false completion claim. The contribution moved K-505 from open to partial, documented the established nonzero-frequency and algebraically special results, and made the remaining zero-frequency catalog explicit.
Inspect K-505 and the remaining gap → · Research-map commit ↗
Machine-checked Kerr work
In a separate Lean 4 repository, Rahim built a checked coordinate-data core for Schwarzschild and Kerr geometry. One narrow, directly inspectable theorem proves that the outer Kerr horizon radius is a root of the Kerr Delta function when the discriminant is nonnegative. The repository publishes the proof boundary and does not present unfinished Ricci, vacuum, or hidden-symmetry scaffolds as complete.