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Nilanjan Bhowmick AIR 3, CSIR NET (Earth Science) 
		 
			 
			 
			 
			 
			 
			 
			 
			 
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Priya wadhwa![best-answer]() 
			
it denotes a very small non negative number, approaching zero but staying positive. The epsilon is used in the epsilon-delta definition of the limit. it's value is arbitrary