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Mirrors > Home > LLPE Home > Th. List > eac2d | Structured version |
Description: & elimination rule, right hand side. ax-eac2 34 has a negation for some reason, this one doesn't. |
Ref | Expression |
---|---|
eac2d.1 | ⊦ (𝜑 ⅋ (𝜓 & 𝜒)) |
Ref | Expression |
---|---|
eac2d | ⊦ (𝜑 ⅋ 𝜒) |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | eac2d.1 | . . . 4 ⊦ (𝜑 ⅋ (𝜓 & 𝜒)) | |
2 | 1 | dni1 25 | . . 3 ⊦ (~ ~ 𝜑 ⅋ (𝜓 & 𝜒)) |
3 | 2 | ax-eac2 34 | . 2 ⊦ (~ ~ 𝜑 ⅋ 𝜒) |
4 | 3 | dne1 26 | 1 ⊦ (𝜑 ⅋ 𝜒) |
Colors of variables: wff var nilad |
Syntax hints: ⅋ wmd 2 ~ wneg 3 & wac 30 |
This theorem was proved from axioms: ax-ibot 4 ax-ebot 5 ax-cut 6 ax-init 7 ax-mdco 8 ax-eac2 34 |
This theorem is referenced by: acco 43 acas 44 acasr 45 dismdac 46 extmdac 47 acm1 80 |
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