402.3A1 Interior Points and the Interior of a Set

0:00 Introduction
0:36 Motivation for Interior Points
2:10 Definition of ε-Neighborhood
4:10 Definition of Interior Point of A
4:31 Definition of Interior of a Set
4:41 Example

[MegaMeister]

Such a lovely explanation thank you for especially bringing the showcase of the "arms" as the epsylon, that helps me a lot

[lediem]

This lesson is so much fun and I get everything you said.
Thank you

[tuongnguyen]

I come from Vietnam and this is a great way to learn Math. Thank you professor Matthew

[approachableGoals]

Thank you so much! Your explanation is so clear that I can understand all of them!

[punditgi]

Love these videos! Many thanks for these. 😃

[yaomingchen]

You save my master degree, thank you sir.

[rrrrrrrango]

This video is really helpful thanks a lot

[DjennyMuiamga]

Hi, nice explanation.
Could you prove that the set of accumulation points are always closed for any set?

[mrleon]

Would a point still be an interior point if it reaches a point not in the set? for example let's say in the example set we use 3 as the point, if we "stretch out" we reach 4 which is not in the set, would the 3 then be an interior point?

[funnydog]

I am having trouble in my advanced calculus class (which is sort of a hybrid of intro to real analysis and calculus 3? weird course that is currently some number theory, set theory, some topology, and some things that i havent had any experience with in the past, which this helps with so thank you!)

[joekpowered]

its really helpful...bt why did you leave out points between 4 and 6?

[shambo]

Wish I'd found these videos earlier. I needed the stick figures 😭Exam 2moro. Need 15% to pass and hoping to get them in topology😅

[JJ-sohe]

Teacher here,

What tool did you use to display your written annotations?

How'd you get that beamer slide to break in the unbalanced grid on the first slide about points?