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Theorem ia 195

Description: 'And' introduction. Axiom ia3 in iset.mm.

**Assertion**
Ref	Expression
ia	⊦ (𝜑 → (𝜓 → (𝜑 ∧ 𝜓)))

**Proof of Theorem ia**
Step	Hyp	Ref	Expression

Colors of variables: wff var nilad

Syntax hints: → wim 180 ∧ wand 182

WARNING: This theorem has an incomplete proof.

This theorem is referenced by: (None)