Yu Yeung POON

11:52

yes but the screen is cropped in a weird way

Yu Yeung POON

12:00

(is it my problem?)

Ho CHAN

12:06

Me too

Yixiao WANG

12:07

me too

Ho CHAN

12:14

the whiteboard is not complete

Ho CHAN

12:16

yes

Yixiao WANG

12:16

yes

Long DANG

12:16

y

Ho CHAN

12:17

good

Chuyao LI

12:17

yes

Ting Fung CHAN

12:18

Now ok

Yu Yeung POON

12:19

yes!! thanks

Ho CHAN

15:04

m*n?

Yixiao WANG

15:05

m*n

Zhiyi XING

16:13

ok

Fung Tin YIP

16:17

it is ok

Siyu ZHANG

16:24

y

Mia JIANG

19:26

ys

Zhiyi XING

25:28

ys

Long DANG

28:32

y

Daoyuan CHEN

29:08

y

Daoyuan CHEN

30:24

1

Daoyuan CHEN

32:51

maybe explain again

Daoyuan CHEN

35:08

yes

Long DANG

35:09

y

Blithe Yang

37:06

y

Daoyuan CHEN

37:06

yes

Zhiyi XING

38:41

ys

Siyu ZHANG

47:27

y

Zhaobang ZHU

47:28

ys

Daoyuan CHEN

47:28

y

Tsz Lung NG

55:01

yes

Daoyuan CHEN

55:02

It seems T^-1*T=Iw and T*T^-1=Iv

Yu Yeung POON

55:02

ys

Daoyuan CHEN

56:38

oh

Daoyuan CHEN

56:42

I see

Daoyuan CHEN

01:00:03

y

Blithe Yang

01:01:54

y

Tsz Lung NG

01:03:08

make sense

Ho CHAN

01:11:12

So a basis of W is given by{ T^(-1)(x1),T^(-1)(x2),….T^(-1)(xn)}?

Ho CHAN

01:11:29

ok

Blithe Yang

01:17:47

y

Tsz Lung NG

01:17:48

yes

Blithe Yang

01:19:49

y

Ho CHAN

01:21:18

I?

Zhiyi XING

01:21:22

identity matrix?

Zhiyi XING

01:25:23

ys

Ting Fung CHAN

01:25:37

y

Daoyuan CHEN

01:27:55

In previous proof, why do we need to two equations which are expanded by T*T^-1 and T^-1*T. I think only one is enough?

Daoyuan CHEN

01:29:37

oh

Daoyuan CHEN

01:29:43

ok

Ho CHAN

01:36:50

yes

Long DANG

01:47:24

y

Siyu ZHANG

01:47:36

y

Daoyuan CHEN

01:49:40

is there any difference between homeomorphic and isomorphic

Ho CHAN

01:50:10

I think homeomorphic is a topological concept?

Daoyuan CHEN

01:50:45

ok

Daoyuan CHEN

01:51:05

But I am thinking is there some example such that it is one but not one another

Daoyuan CHEN

01:52:02

ok

Lok Ming LUI

01:52:10

Thank you for attending the lecture.

Ga Ming Angus CHAN

01:52:25

`thank you!