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			11 строки
		
	
	
		
			213 B
		
	
	
	
		
			Plaintext
		
	
	
	
	
	
			
		
		
	
	
			11 строки
		
	
	
		
			213 B
		
	
	
	
		
			Plaintext
		
	
	
	
	
	
| |- turnstyle (Frege)
 | |
| Meet - GLB (Lower semilattice)
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| Join - LUB (Upper semilattice)
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| 
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| Weekening
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|     G |- A true  =>  G,B true |- A true
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| Contraction
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|     We can use assumption twice
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| Exchange
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|     Order does not matter
 | 
