{ "domain": "mathematics", "topics": [ "analysis", "geometry-topology" ], "type": "construction", "also": [ "proof" ], "source": { "key": "aimpl", "name": "AIM Problem Lists", "url": "http://aimpl.org/stekloveigen/5/", "id": "stekloveigen 5.2", "curator": "American Institute of Mathematics", "poser": "Leonid Parnovski", "status": "open", "as_of": "2026-10-20", "catalog": "0521c19bbd38" } }