The connection in between sets recognized by ⊆ known as inclusion or containment. Equality in between sets can be expressed in terms of subsets. A far more formal statement on the axiom of option is: the Cartesian solution of each indexed spouse and children of nonempty sets is non empty. https://rowanfhgge.dm-blog.com/36092204/dịch-vụ-Đồ-cúng-tphcm-things-to-know-before-you-buy