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Description: Equality implies inclusion, deduction version. (Contributed by SN, 6-Nov-2024)
| Ref | Expression | ||
|---|---|---|---|
| Hypothesis | eqimssd.1 | ||
| Assertion | eqimssd |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | eqimssd.1 | ||
| 2 | ssid | ||
| 3 | 1 2 | eqsstrdi |