标题： 四维标架形式中的可积性与宇宙学中的守恒性 显示英文标题

标题： Integrability in tetrad formalisms and conservation in cosmology

摘要： 一般四维标架形式中的可积性被回顾，这是在Papapetrou和Edgar的工作基础上进行的并加以澄清。 可积性条件是（组合的）Bianchi方程及其后果。 考虑了引入额外约束的情况。 宇宙学1+3协变形式中约束守恒的最新结果被证明可以从Bianchi方程得出。 显示英文摘要

摘要： Integrability in general tetrad formalisms is reviewed, following and clarifying work of Papapetrou and Edgar. The integrability conditions are (combinations of) the Bianchi equations and their consequences. The introduction of additional constraints is considered. Recent results on the conservation of constraints in the 1+3 covariant formulation of cosmology are shown to follow from the Bianchi equations