🌐EnglishEnglishDeutschEspañolFrançaisPortuguêsفارسی한국어中文日本語EntityQ986455· pop 8· linked from 110 articlesenergy conditionsimplifying assumptions about the behavior of the stress–energy tensor in general relativityAvailable in 8 languagesEspañolFrançaisDeutsch中文Portuguêsفارسی한국어via Wikidata sitelinks · CC0Connectionseigenvectors and eigenvaluesEntitygravityEntityCategoriesMathematics of general relativity