Description: A constructed topological group is a structure. (Contributed by Mario Carneiro, 29-Aug-2015)
Ref | Expression | ||
---|---|---|---|
Hypothesis | topgrpfn.w | |
|
Assertion | topgrpstr | |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | topgrpfn.w | |
|
2 | 1nn | |
|
3 | basendx | |
|
4 | 1lt2 | |
|
5 | 2nn | |
|
6 | plusgndx | |
|
7 | 2lt9 | |
|
8 | 9nn | |
|
9 | tsetndx | |
|
10 | 2 3 4 5 6 7 8 9 | strle3 | |
11 | 1 10 | eqbrtri | |