Metamath Proof Explorer
		
		
		
		Description:  Deduction adding conjuncts to antecedent.  (Contributed by Alan Sare, 17-Oct-2017)  (Proof shortened by Wolf Lammen, 14-Apr-2022)
		
			
				
					|  |  | Ref | Expression | 
					
						|  | Hypothesis | ad5ant.1 | ⊢ ( ( 𝜑  ∧  𝜓  ∧  𝜒 )  →  𝜃 ) | 
				
					|  | Assertion | ad5ant234 | ⊢  ( ( ( ( ( 𝜏  ∧  𝜑 )  ∧  𝜓 )  ∧  𝜒 )  ∧  𝜂 )  →  𝜃 ) | 
			
		
		
			
				Proof
				
					
						| Step | Hyp | Ref | Expression | 
						
							| 1 |  | ad5ant.1 | ⊢ ( ( 𝜑  ∧  𝜓  ∧  𝜒 )  →  𝜃 ) | 
						
							| 2 | 1 | ad4ant234 | ⊢ ( ( ( ( 𝜏  ∧  𝜑 )  ∧  𝜓 )  ∧  𝜒 )  →  𝜃 ) | 
						
							| 3 | 2 | adantr | ⊢ ( ( ( ( ( 𝜏  ∧  𝜑 )  ∧  𝜓 )  ∧  𝜒 )  ∧  𝜂 )  →  𝜃 ) |