Interior, Exterior and Boundary of a subset of a topological space)

[@KiprotichRutoh3]

Wow, you made it easier. Thank you sir❤

[@ReindolfBoadu]

You're welcome, Rutoh

[@amazingkenn]

Thank you sir
You have made this easier. Thank you very much

[@ReindolfBoadu]

Glad to hear that.
You're welcome

[@nangwadorcas1808]

The explanation in your videos are great. Keep it up

[@ReindolfBoadu]

Thanks Dorcas. All the best

[@philominaantwi5231]

Wow
You made it so easy

[@ReindolfBoadu]

Glad to hear that

[@tiktokgod3070]

Thank You very much Sir. Please from the definition you gave for int(A), it says the int(A) is the union of all open sets contained in A and hence I am asking if I can find the All the Open set which are in A then I find their union. As in the Open Sets that are found in A are the empty set and the set {c,d} and hence their union is {c,d} which gives the int(A). please that was my understanding on the definition for the interior

[@ReindolfBoadu]

And that's excellent Abraham. You are right. You can also use that approach to find the interior of A.

[@tiktokgod3070]

@@ReindolfBoadu thank you sir

[@divinefire7531]

👌👌👍

[@benjamindowouna7844]

pls when u were checking if c is the interior of A in ur sixth video ,u listed phi among the open sets containg c, why is phi the empty set among the open set containing c,i kniow that phi is an open set since its found in T,but c cannot be found in an empty set which is phi so why did u list phi among the open sets that contained c pls explain🙏🙏🙏🙏

[@saiduabubakar2648]

Please.
I need a full explanation of NEIGHBOURHOOD and NEIGHBORHOOD SYSTEM with EXAMPLES of each