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Mirrors > Home > QLE Home > Th. List > ran | GIF version |
Description: Introduce conjunct on right. (Contributed by NM, 10-Aug-1997.) |
Ref | Expression |
---|---|
ran.1 | a = b |
Ref | Expression |
---|---|
ran | (a ∩ c) = (b ∩ c) |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | ran.1 | . . 3 a = b | |
2 | 1 | lan 77 | . 2 (c ∩ a) = (c ∩ b) |
3 | ancom 74 | . 2 (a ∩ c) = (c ∩ a) | |
4 | ancom 74 | . 2 (b ∩ c) = (c ∩ b) | |
5 | 2, 3, 4 | 3tr1 63 | 1 (a ∩ c) = (b ∩ c) |
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