{\displaystyle \Omega } 的概念,加入一個一般的集合 G {\displaystyle G} 以將李維坍縮(英语:Levycollapse) M [ G ] {\displaystyle M\left[G\right]} 套用在 M {\displaystyle M} 上,而這樣得到的
1994-03-24 [2015-11-21]. (原始内容存档于2012-01-02). Corr, O. Casey. Nintendo: From Collapse to Empire. The Seattle Times. 1993-07-18 [2015-11-21]. (原始内容存档于2020-07-16)
Democratic Party in the United States used the postbubble scandals and the collapse of share prices to attack the Republican Party ... Corporate governance
; Gibson, E. K.; Koeberl, C. Martian subsurface cryosalt expansion and collapse as trigger for landslides. Science Advances. 2021, 7 (6): eabe4459. ISSN 2375-2548