Description: SquareDefinition generator rule. (Contributed by Stanislas Polu, 7-Apr-2020)
Ref | Expression | ||
---|---|---|---|
Hypotheses | int-sqdefd.1 | |
|
int-sqdefd.2 | |
||
Assertion | int-sqdefd | |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | int-sqdefd.1 | |
|
2 | int-sqdefd.2 | |
|
3 | 2 | oveq1d | |
4 | 1 | recnd | |
5 | 4 | sqvald | |
6 | eqcom | |
|
7 | 6 | imbi2i | |
8 | 2 7 | mpbi | |
9 | 8 | oveq1d | |
10 | 5 9 | eqtrd | |
11 | 3 10 | eqtrd | |
12 | 11 | eqcomd | |