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| Mirrors > Home > MPE Home > Th. List > nfeq2 | Structured version Visualization version GIF version | ||
| Description: Hypothesis builder for equality, special case. (Contributed by Mario Carneiro, 10-Oct-2016.) | 
| Ref | Expression | 
|---|---|
| nfeq2.1 | ⊢ Ⅎ𝑥𝐵 | 
| Ref | Expression | 
|---|---|
| nfeq2 | ⊢ Ⅎ𝑥 𝐴 = 𝐵 | 
| Step | Hyp | Ref | Expression | 
|---|---|---|---|
| 1 | nfcv 2905 | . 2 ⊢ Ⅎ𝑥𝐴 | |
| 2 | nfeq2.1 | . 2 ⊢ Ⅎ𝑥𝐵 | |
| 3 | 1, 2 | nfeq 2919 | 1 ⊢ Ⅎ𝑥 𝐴 = 𝐵 | 
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