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intersect

a: {};

b: {1};

c: {0};

Calculate

intersect

? intersect;

Calculate

intersect-is-setdifference-union

H:{1,2,3,4};

A:{2,3};

B:{3,4};

Calculate

intersect

A : {1,2,3,4,5};

B : {1,2,3,4,5};

C : {1,{2,{3,{4,{5}}}}};

Calculate

intersect-listify

ans1: {1,2};

x_1: 1;

x_2: 2;

Calculate

intersect

a: {};

b: {1};

c: {0};

Calculate

intersect-union

A : {1,2,3};

B : {};

union(A,B);

Calculate

intersect-powerset-union

A : {1,2,3};

B : {a,b};

union(A,B);

Calculate

intersect-powerset-union

intersect({a, b, c}, ...

union({a, b, c, d}, {...

powerset({a, b, c, d,...

Calculate

intersect-powerset

A : {{1},1};

B : powerset(A);

intersect(A,B);

Calculate

intersect

Run Example
(%i1)A : {1,2,3};
(%o1)                              {1, 2, 3}
(%i2) B : {};
(%o2)                                 {}
(%i3) union(A,B);
(%o3)                              {1, 2, 3}
(%i4) intersect(A,B);
(%o4)                                 {}
(%i5) 
Run Example
intersect({a, b, c}, {c, d, e});
(%o1)                                 {c}
(%i2) 
Run Example
cardinality ({});
(%o1)                                  0
(%i2)  cardinality ({a, a, b, c});
(%o2)                                  3
(%i3)  union({a,b},{a,c});
(%o3)                              {a, b, c}
(%i4)  intersect({a,b},{a,c});
(%o4)                                 {a}
(%i5) c={a}+{b};
(%o5)                            c = {b} + {a}
(%i6)  cardinality ({{},{{{}}},{{},{{}}},{{}},{{}}});
(%o6)                                  4
(%i7) 

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