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Axiom ax-nure 216
Description: Commutation of ν with .
Assertion
Ref Expression
ax-nure x[uv] 𝜑 ⧟ [uv] νx𝜑)

Detailed syntax breakdown of Axiom ax-nure
StepHypRef Expression
1 wph . . . 4 wff 𝜑
2 vv . . . 4 var v
3 vu . . . . 5 var u
43nvar 203 . . . 4 nilad u
51, 2, 4wre 205 . . 3 wff [uv] 𝜑
6 vx . . 3 var x
75, 6wnu 206 . 2 wff νx[uv] 𝜑
81, 6wnu 206 . . 3 wff νx𝜑
98, 2, 4wre 205 . 2 wff [uv] νx𝜑
107, 9wlb 55 1 wffx[uv] 𝜑 ⧟ [uv] νx𝜑)
Colors of variables: wff var nilad
This axiom is referenced by: (None)
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