Neighbourhood of a point in topology | Neighborhood system in topology | Concept, Examples, Theorems

Neighbourhood of a point in topology | Neighborhood system in topology | Concept, Examples, Theorems

Hello Friends , My Name is Kamaljeet Mittal.

This is the lecture series on the Point-set Topology or General Topology. This video is useful for those friends who are doing their Masters in Mathematics I mean Msc and those who are preparing for CSIR-UGC Net This can also be useful for BSC Honors in mathematics students.

ABOUT VIDEO
→ Every T-open set containing the point x is a T-nbd. of the point.
→Open set is the T-nbd. of each of its point
→T-open set is a T-nbd. of each of its point
→T-open nbd. of a point need not be T-open set.

Theorem: A subset of a topological space is open set if and only if it is a T-nbd. of each of its points.

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