有界格上的一些函数与几个半群

在有界格上引进了6个函数(算子),研究了它们之间的关系,并且得到了几个半群．     

The Largest Cardinals of Isomorphic Class of Topology-set-lattices on an Infinite Set

Let X be an infinite set,K={τ:τ is a topology on X},defineτ≌σ iff (f)(f is a lattice-isomorphism from τ to σ),for a given τ∈K we define τ={σ:σ∈K ＆σ≌τ}K(K)is an imcomparable class iff (τ∈K)(σ∈K)(τ≠→τ and σ are incomparable),M={K:K is an incomparable class}. Theorem 1 sup{|τ|:τ∈K}=max{|τ|:τ∈k}=|K|=2~2~[X]=exp(exp(|X|)). Theorem 2 sup{sup{|τ|:τ∈K}:KK ＆ K is an incomparable class}=sup     

一些集的基数(Ⅸ)

Let X be an infinite set, C={G:G is a group defined on the X}, Define {H:H is isomorphic to G}, C_2={C & G js not commutative},then |C_2|=2 If K={F:F is a division ring defined on the X},K_1={K & F is not com mutative}, K_2={K & F is commutative},then |K_1| [ = IK2t --2:s~. Suppose T(X) {X~X & qψis bijective},S={G:G is a subgroup of T(X)},S_1={S & G is commutative}, S_2={S & G is not commutative},then |S_1|=|S_2|=2~(2~(|x|)).     

一些集的基数(Ⅷ)

Let X be an infinite set, C={B:B is a Boolean algebra defined on the X},Define B={D:D is isomorphie to B}, C={C & B is atomic},C_2= {C & B is not atomic},then |C_1|=|C_2|=2~(|x|). The power set of X is denoted by P(X), P(X) is a field of sets (Under Union and Intersection of sets, and Complement of set), Suppose K={F:F js a field of sets & FP(X)}, K_1={K},K_2{K & F is not atomie} then |K_1|=|K_2|=2~(2~(|x|)).     

集合论与代数的新的运算(Ⅱ)

定义1 令X={x_1,x_2,…,x_n,…}=可数无穷集合,F(X)=是有限集},对于,先作一一对应其中i_1,i_2,…,i_n…∈{0,1},满足然后把A与A所对应的(i_1,i_2,…,i_n,…)作恒同的理解,中最多只有有限个i_a等于1,其余的均为0),对于A=(i_1,i_2,…,i_n,…),令     

集合论与代数的新运算(Ⅱ)

定义1 令X={x_1,x_2,…,x_n,…}=可数无穷集合,是有限集。对于先作一一对应其中i_1,i_2,…,i_n,…∈{0,1}满足然后把A与A所对应的(i_1,i_2,…)作恒同的理解,中最多只有有限个i_a等于1,其余的均为0),对于A=(i_1,i_2…,i_n,…)令其中当{l:i_1=j_1=0}≠φ(非空),min{l:i_1=j_1=0}