Description: The intersection of a collection of infinite Cartesian products. (Contributed by Mario Carneiro, 3-Feb-2015)
Ref | Expression | ||
---|---|---|---|
Assertion | ixpint | |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | ixpeq2 | |
|
2 | intiin | |
|
3 | 2 | a1i | |
4 | 1 3 | mprg | |
5 | ixpiin | |
|
6 | 4 5 | eqtrid | |