0708-1300/Homework Assignment 1
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Reading
Read sections 1-5 of chapter II of Bredon's book three times:
- First time as if you were reading a novel - quickly and without too much attention to detail, just to learn what the main keywords and concepts and goals are.
- Second time like you were studying for an exam on the subject - slowly and not skipping anything, verifying every little detail.
- And then a third time, again at a quicker pace, to remind yourself of the bigger picture all those little details are there to paint.
Doing
- Solve and submit the following two problems:
- Show explicitly that the restricted implicit function theorem, with [math]\displaystyle{ x_0=y_0=0 }[/math] and [math]\displaystyle{ \partial_yg=I }[/math], is equivalent to general implicit function theorem, in which [math]\displaystyle{ x_0 }[/math] and [math]\displaystyle{ y_0 }[/math] are arbitrary and [math]\displaystyle{ \partial_yg }[/math] is an arbitrary invertible matrix.
- Show that the definition [math]\displaystyle{ f\begin{pmatrix}x\\y\end{pmatrix}=\begin{pmatrix}x\\g(x,y)\end{pmatrix} }[/math] reduces the implicit function theorem to the inverse function theorem. A key fact to verify is that differential of [math]\displaystyle{ f }[/math] at the relevant point is invertible.
- Solve the following problems from Bredon's book, but submit only the solutions of the problems marked with an "S":
| problems | on page(s) |
|---|---|
| S1, 2, 3, S4, 5 | 71 |
| 1, S2 | 75-76 |
| 1-4 | 80 |
Due Date
This assignment is due in class on Thursday October 4, 2007.
