🌐EnglishEnglishBahasa IndonesiaDeutschEspañolFrançaisPolskiPortuguêsSvenskaTiếng ViệtРусскийالعربيةفارسی한국어中文日本語EntityQ1452678· pop 19· linked from 216 articlesPenrose–Hawking singularity theoremstheoremConnectionsenergy conditionEntityStephen HawkingPersonCategoriesGeneral relativityGravitational singularitiesMathematics of general relativityRoger PenroseTheorems in general relativity