Description: Square root theorem. Theorem I.35 of Apostol p. 29. (Contributed by Mario Carneiro, 29-May-2016)
Ref | Expression | ||
---|---|---|---|
Hypothesis | abscld.1 | |
|
Assertion | msqsqrtd | |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | abscld.1 | |
|
2 | 1 | sqrtcld | |
3 | 2 | sqvald | |
4 | 1 | sqsqrtd | |
5 | 3 4 | eqtr3d | |