摩臣娱乐There has been much research on conditions when the equilibrium will be unique, or which at least will limit the number of equilibria. One result states that under mild assumptions the number of equilibria will be finite (see ) and odd (see index theorem). Furthermore if an economy as a whole, as characterized by an aggregate excess demand function, has the (which is a much stronger condition than revealed preferences for a single individual) or the gross substitute property then likewise the equilibrium will be unique. All methods of establishing uniqueness can be thought of as establishing that each equilibrium has the same positive local index, in which case by the index theorem there can be but one such equilibrium.
钫没有商业应用,但钫的原子结构相对简单,因而在光谱学实验中有广泛应用。钫的光谱学研究可以提供和能级、次原子粒子间的耦合常数相关的信息。科学家研究激光束缚的钫-210粒子发射的光,获得了原子能级跃迁的准确数据,和量子论的预测相近。
一項使用了統計分析和威尔逊性幻想问卷的研究顯示,以動物或兒童為對象的性幻想十分罕見,不過其亦把「非-{典}-型」的性幻想主題限至七種,其中包括淫樂排尿、異性裝扮、强奸。多項研究發現,不少人會產生「非-{典}-型」的性幻想——因為性幻想種類愈多,當事人的性生活滿意度愈會增加。比方說,2011年的研究表示,柏林超过一半的老年男性擁有「非-{典}-型」的性幻想,其中21.8%曾產生擁有虐待成分的性幻想——這是淫樂殺人的先決條件。另一项研究发现,人們在搜尋色情作品時,經常會輸入跟支配與臣服有關的字眼。