Telegram group: T.me/BBCNOUN ====== MTH301 ====== 1. If A and B are two subsets of X, A is said to meet B if ___________ --->> \(A\cap B\leq \phi\) \(A\cap B= \phi\) \(A\cup B\leq \phi\) \(A\cup B= \phi\) 2. Let X be a topological space and\(A\subset X\) . The ____________\(Cl(A)\) of A is the intersection of all the closed subsets of X that contain A n interior --->> closure limit exterior 3. A topological invariant is a way of assigning a mathematical object L(X) to every topological space X, such that if X and Y are ________ then L(X) and L(Y) are isomorphic.n --->> homeomorphic holomorphic interior relative 4. A topological invariant is a way of assigning a mathematical object L(X) to every topological space X, such that if X and Y are __________ then \(L(X)\) and \(L(Y)\) are isomorphic.n --->> homeomorphic holomorphic interior relative 5. Let X be a topological space and\(A\subset X\) . A ___________ Point of A is a point x in X such that every neighbourhood of x contains some points of A different from x.n interior --->> boundary limit exterior 6. A set is open if it contains all its __________ points. --->> interior boundary limit exterior 7. A set is closed if it contains all its __________ points interior boundary --->> limit exterior 8. If A and B are two subsets of X, A is said to meet B if ___________ --->> \(A\cap B\neq \phi\) \(A\cap B = \phi\) \(A\cup B\neq \phi\) \(A\caup B= \phi\) 9. Let X be a topological space and A, a subset of X. The ______ topology \(Ï„_{A}\) on A if n for some \(\tau_{A}={U\subseteq A: U=W\) for some \(W\in \tau\)n usual --->> relative relation subset 10. Let X be a topological space and \(A\subseteq\) . The ________ \(Cl(A)\) of A is the intersection of all the closed subsets of X that contain A interior --->> closure limit exterior