Theorem nandil-P4.3a.RC 374

Description: Inference Form of nandil-P4.3a 373. †

Hypothesis

Ref	Expression
nandil-P4.3a.RC.1	⊢ ¬ 𝜑

Assertion

Ref	Expression
nandil-P4.3a.RC	⊢ ¬ (𝜓 ∧ 𝜑)

Proof of Theorem nandil-P4.3a.RC

Step	Hyp	Ref	Expression
1		nandil-P4.3a.RC.1	. . . 4 ⊢ ¬ 𝜑
2	1	ndtruei-P3.17 182	. . 3 ⊢ (⊤ → ¬ 𝜑)
3	2	nandil-P4.3a 373	. 2 ⊢ (⊤ → ¬ (𝜓 ∧ 𝜑))
4	3	ndtruee-P3.18 183	1 ⊢ ¬ (𝜓 ∧ 𝜑)

Syntax hints:  ¬ wff-neg 9   ∧ wff-and 132  ⊤wff-true 153

This theorem was proved from axioms:  ax-L1 11  ax-L2 12  ax-L3 13  ax-MP 14

This theorem depends on definitions:  df-bi-D2.1 107  df-and-D2.2 133  df-true-D2.4 155

This theorem is referenced by: (None)