Theorem bijust-P2.2-L1 105

Description: Lemma for bijust-P2.2 106.

Assertion

Ref	Expression
bijust-P2.2-L1	⊢ ¬ ((𝛾 → 𝛾) → ¬ (𝛾 → 𝛾))

Proof of Theorem bijust-P2.2-L1

Step	Hyp	Ref	Expression
1		id-P1.4 36	. 2 ⊢ (𝛾 → 𝛾)
2	1, 1	cmb-L2.3.2SH 100	1 ⊢ ¬ ((𝛾 → 𝛾) → ¬ (𝛾 → 𝛾))

Syntax hints:  ¬ wff-neg 9   → wff-imp 10

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

This theorem is referenced by:  bijust-P2.2  106