Abstract : direct limit and inverse limit are the methods producing new algebra in universal algebra . in order to further study the production of the new algebra , authors define the family of duplicate set and duplicate limit , discuss the algebraic duplicate limit , the characterestics of the once more duplicate direct set and more duplicate direct limit , the family of once more duplicate direct direct algebra and the limit of once more duplicate algebraic set family 文摘:直极限和逆极限是泛代数中生成新代数的方法,为了进一步研究新代数的生成,笔者给出了重集族和重极限的定义,讨论了代数的重极限;其次研究了二重直集族和二重直极限及相应性质,讨论了二重直代数族和二重直代数族的极限
百科解释
Universal algebra (sometimes called general algebra) is the field of mathematics that studies algebraic structures themselves, not examples ("models") of algebraic structures.