Closed subset of a compact set is compact | Compact set | Real analysis | Topology | Compactness

closed subset of a compact set is compact | Compact Set | Real analysis | metric space | Basic Topology | Math tutorials | Classes By Cheena Banga ***Open Cover and sub cover of a set | Definition with Examples.***    • Open cover and Sub cover | Finite Sub cove...   ***Real Analysis playlist***    • Real Analysis   ***Compactness and connectedness in real analysis definition and theorems | playlist***    • Compactness | Connectedness | Theorems | R...   useful for Msc | BSC | NET | NBHM | LPU | DU | IIT JAM | TIFR Other topics covered in playlist: Heine-Borel theorem Closed Set | definition | theorems set is closed iff its complement is open Bolzano weierstrass theorem : Every infinite bounded subset of R has a limit point. Definition of Neighbourhood of a point Definition of Open set infinite intersection of open sets need not to be open Union of two NBDS is NBD Intersection of NBDS is NBD Superset of a NBD is also a NBD Every Open interval (a,b) is neighbourhood of each of its points. Closed interval is neighbourhood of each point except end points. real numbers is NBD of each real number Rational numbers set is not the neighbourhood of any of its points. Metric space | Distance Function | Example Metric space : Definition and Axioms Real Analysis : Introduction and Intervals Union of countable sets is countable Finite,infinite,equivalent,denumerable,countable sets Infinite subset of countable set is countable Field,Ordered Field,complete Ordered Field Set of Integers is Countable Supremum and infimum Set is countably infinite iff it can be written in the form distinct elements Continuum Hypothesis Cartesian product of two countable sets is Countable Set of Rational numbers is Countable Keep Watching Math Tutorials Classes by Cheena Banga Definition of metric Space Examples of metric space Open and Closed sets Topology and convergence Types of metric spaces Complete Spaces Bounded and complete bounded spaces Compact spaces Locally compact and proper spaces connectedness Separable spaces Pointed Metric spaces Types of maps between metric spaces continuous maps uniformly continuous maps Lipschitz-continuous maps and contractions isometries Quasi-isometries notions of metric space equivalence Topological properties Distance between points and sets Hausdorff distance and Gromov metric Product metric spaces Continuity of distance Quotient metric spaces Generalizations of metric spaces Metric spaces as enriched categories Compactness in Real analysis compactness in metric space compactness in topology compactness and connectedness in real analysis compactness and connectedness compactness in topological space Connectedness in Real analysis connectedness in metric space connectedness in topology connectedness in topological space Theorems on connectedness theorems on compactness