Elastic inverse uniqueness question open since 1994 finally resolved in 3D
andrew_n_carr · x · 2026-10-07
andrewncarr highlights his favorite recent paper: the Elastic Inverse problem — inferring an object's interior by poking its surface. The result shows the internal map of plasticity is unique: if two interiors respond identically to every possible surface deformation, they share the same shear and bulk stiffness everywhere. This settles a uniqueness question open in 3D since 1994, with implications for non-destructive testing.
More from Research
- OpenAI's one-tape TM simulation implies RAM time t is in SPACE[t^4/5], says Williams — rrwilliams · 2026-10-07
- What If AI Agents Remembered Like Living Systems? A Mycelial Framework for Agent Memory — repligate · 2026-10-07
- U. Tokyo's Kavli IPMU Hires Postdocs to Build Agentic AI for Theoretical Physics — fatihdin4en · 2026-10-07
- ACL 2027 launches special theme track on LLM homogenization and knowledge collapse — TuhinChakr · 2026-10-07
- Microsoft's PrisMem evolves agent memory per-capability, beats baselines by 10.5 points on BEAM-1M — microsoft · 2026-10-07
- Google's SEER adds self-evolving event reasoning to time-series forecasting, beats SOTA on six benchmarks — google · 2026-10-07