Mathematics, 01.02.2021 07:00 yoboi33
Let X be a topological space and let C and U be subsets of X. Define C to be closed if C contains all its limit points and define U to be open if every point p ∈ U has a neighborhood which is contained in U. Assuming these definitions show that the following statements are equivalent for a subset S of X. i) S is closed in X; ii) X – S is open in X; iii) S = [S].
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Mathematics, 21.06.2019 18:30, guillianaroberts
Water flows at a steady rate from a tap. its takes 40 seconds to fill a 4 litre watering can from the tap. the rate at which water flows from the tap is halved. complete: 4 litres into cm3
Answers: 3
Mathematics, 21.06.2019 21:40, chunkymonkey090
Ihonestly have no clue if it's each or none.
Answers: 1
Let X be a topological space and let C and U be subsets of X. Define C to be closed if C contains al...
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