Abstract: The formal deductive system ß of universal logic in the ideal condition has been given in paper [2]， UB algebra for universal logic in the ideal condition （h=k=0.5） was introduced in paper [3]， and some propertives of UB algebra in universal logic were described in paper [5]. Based on paper [3] and [5]， fuzzy filter and quotient algebra in UB algebras are discussed more.

Key words: universal logic, UB-algebras, fuzzy logic, fuzzy filter

摘要： 文献[2]给出了理想状态下泛逻辑学的形式演绎系统ß，证明了此系统是可靠的。文献[3]提出了在理想状态（h=k=0.5）下泛逻辑学对应的代数系统-UB代数。文献[5]研究了泛逻辑学中UB代数系统的若干性质。在文献[3，5]的基础上，进一步讨论了UB代数fuzzy滤子与商代数。

关键词: 泛逻辑学, UB代数系统, 模糊逻辑, fuzzy滤子