Is the intersection of a and a empty

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RELATED INFORMATIONS

1. Does the intersection of a and B equal a mean that B equals a
2. What does it mean that the intersection of a and B equals the union of a and B?
3. A ∪ B = a, then a can be equal to B, the intersection of a and B is equal to B, can a be equal to B
4. If a intersection B equals B, is a equal to B? That is, the intersection of a and B is equal to B. does it mean that set a and B are equal
5. What is the intersection of an empty set and a? 1. What is the intersection of an empty set and a (non empty set)? 2. Why {x | x > 2} {x | X2, or x
6. The intersection of a and B consists of all elements belonging to a and B For "a ∩ B = {x | x ∈ a, and X belongs to B}, we can not only think that any element of a ∩ B is the common element of a and B, but also that the common elements of a and B belong to a ∩ B, which is the meaning of" all "in the text definition, not" part "of the common element, Be clear and easy to understand, When the common elements of a and B are not in a ∩ B? What do you say···
7. If a = {x is greater than or equal to - 3 and less than 1} B = {x is greater than or equal to A-1 and less than or equal to a} and the intersection of a and B is not an empty set, then the value range of a
8. Given the complete set L = {x | x ∈ r}, set a = {x, X less than or equal to 1 or X ≥ 3}, set B = {x, K < x < K + 1, K ∈ r} and (C1a) ∩ B = empty set, then the value range of real number k is
9. Let a = {2 less than or equal to x less than or equal to 7}, B = {x greater than a}, C = {K + 1 less than or equal to x less than or equal to 2K + 3} 1, if the empty set is a proper subset of (a intersection B), The known set a = {2 less than or equal to x less than 7}, B = {x greater than a}, C = {K + 1 less than or equal to x less than or equal to 2K + 3} 1. If the empty set is a proper subset of (a intersection b), the value range of a is obtained 2. If a and C = a, find the value range of K
10. Let u = Z, a = (x | x = 2K -- 1, K belongs to Z) then what is CUA equal to?
11. If the intersection of a and B is an empty set, then at least one of a and B is an empty set?
12. The intersection of a and B is B. can a and B be empty
13. Can the intersection of set a and set B be empty? Can it be set a or set B?
14. Let u = n, a = {x | x = 2K, K ∈ n}, B = {x | x = 2K + 1. K ∈ n}, find CUA, cub
15. Let u = Z, a = {x | x + 2K, K ∈ Z}, B = {x | x = 2K + 1, K ∈ Z}, find CUA, cub
16. When u = Z, a =, B = find CUA, cub
17. Let u = Z, a = {x | x = 2K, K ∈ Z}; b = {x | x = 2K + 1, K ∈ Z} find CUA, Cub? Let u = Z, a = {x | x = 2K, K ∈ Z}; b = {x | x = 2K + 1, K ∈ Z} find CUA, Cub? It's urgent
18. Let a = {x x = 2k-1, K ∈ Z}, B = {x x = 2K, K ∈ Z}, find a ∩ B, find a ∪ B
19. Let u = Z, a = {x = 2K, K ∈ Z}, B = {x | x = 2K + 1, K ∈ Z} CUA, Cub? Write the steps?
20. It is known that two points a and B are on the straight line y = X-1, and the difference between the abscissa of a and B is the root sign 2 Be as detailed as possible