In this paper the author has discussed several questions on universal, especially introduced some functions on cardinal numbers in universalalgebras and made some discussions on them.
本文讨论了关于泛代数的几个问题,特别是引进了泛代数中的一些基数函数。
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For quantum mechanical control systems with structures of universal enveloping algebras, the thesis studies the enlargability of the universal enveloping algebras and the domain problems.