[269] Online lecture today

[Gautam Iyer]

Hi All,

I will be travelling on Wednesday 4/17, and there will be no class
Wednesday 4/17. To make up for the missed class I will have an online
lecture tomorrow (Tuesday 4/16) at 10:00AM covering Greens theorem. (I
will almost certainly not be able to finish the proof, and will finish
it on Friday.)

Like last time, I will lecture on Zoom. If you are interested in
watching it live, then download / install Zoom, and join the meeting
with ID

    4122688419

(You can also do this from your browser.) Please keep your mike muted if
you are not asking a question (clicking / turning pages causes lots of
feedback).

If you can't join live, the video will be posted on the class website
shortly, along with a PDF of everything I write.

Best,

Gautam

PS: If you join live please feel free to ask questions. I can not see
    the chat window easily. But just say something and interrupt me at
    any point.

PPS: I talked to Yudong after class and he was right. A much shorter way
     to prove that \tilde \gamma^{-1} \circ \gamma is C^1 is to realize
     that locally this is the same as the composition of the dth
     coordinates of each of these functions, and then use the one
     variable inverse function theorem.

-- 
'School' -- Place where people learn how to copy textbooks, for that
common situation in later life when the photocopier breaks and you
really need part of a book you aren't allowed to borrow.