The difference between Open box and Open interval
Open box is also adjective with the meaning: pertaining to a product sold by merchants at a discount, because the item was returned but found not to be defective.
Open interval is also noun with the meaning: an interval in the real number line which does not contain its supremum and infimum. if specified by a pair of real numbers, then it consists of all the points on the real line whose values lie strictly between those two real numbers.
check bellow for the other definitions of Open box and Open interval
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Open box as an adjective:
Pertaining to a product sold by merchants at a discount, because the item was returned but found not to be defective.
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Open interval as a noun (mathematics):
an interval in the real number line which does not contain its supremum and infimum. If specified by a pair of real numbers, then it consists of all the points on the real line whose values lie strictly between those two real numbers.