2007-03-16, Friday, 16:00
	Lecture 12
		updated (source credit for the movie)

2007-03-15, Thursday, 21:42
	Lecture 12
		updated (cover page and the last page)
		
2007-03-15, Thursday, 17:23
	Lectures 10,11,12
		uploaded (10 is an update of the last three pages)

2007-03-12, Monday, 16:31
	Lecture 10
	00 - Bare Bone ...
		uploaded
		
2007-03-07, Wednesday, 16:49
	Lectures 08, 09
		uploaded
		
2007-03-06, Tuesday, 10:25
	Lecture 07
		updated (pages 10 and after)

2007-02-28, Wednesday, 13:11
	Lecture 07
		updated
	Homework 05
		uploaded
		
2007-02-26, Monday, 11:17
	Lecture 06
		Added 6 more pages - tight binding band
	Lecture 07 
		uploaded

2007-02-22, Thursday, 17:08
	Homework 03
		updated

2007-02-12, Monday, 22:34
	Homework 01 - Solutions
	00 - Fun with Electron Gas
		uploaded
		
2007-02-09, Friday, 11:22
	Homework 03
		2b: clarification on the notation of beta
		2c: added a note (It is ok just to show the T2 behavior)
		2d: simplified
		2: some more tips added at the end
		3: some typos corrected
		3b: problem changed a bit (include reflectivity, but throw away the last part)
		4: u_nk(x) -- dropped subscript n (implicit), since it is confusing with u_n for phonon
		5c: added "In the plot, show where is the Fermi energy"
		5d: added ("circle" may be more appropriately called "diamond" or "star")

2007-02-08, Thursday, 18:32
	Homework 03
		typo corrected for 4, (2.7) -> (2.8)  (thanks Steve)
		note added to 4
		
2007-02-08, Thursday, 09:57
	Homework 04
		wordings in 1,2 polished
	Quiz 01 - w Solutions
		uploaded
		
2007-02-07, Wednesday, 21:27
	Homework 04
		uploaded
		
2007-02-07, Wednesday, 11:24
	Homework 03
		the last problem added
		
2007-02-05, Monday, 17:15
	Lecture 06
		uploaded
		
2007-02-05, Monday, 10:48		
	Lecture 06 - Bloch Theorem
		Step 2 revised,  notations improved
		
2007-02-04, Sunday, 13:57
	Lecture 04
		slide 16: first part simplified (relation between beta and B; use Euler's chain rule)
	00 - Cp and Cv
	Homework 03
		uploaded
		
2007-02-01, Thursday, 09:29
	00 - Course Schedule
		uploaded

2007-01-31, Wednesday, 19:50
	Lecture 05
		slide 11: 2nd Fermi sphere is now displaced to the left (thanks Danny)
		
2007-01-31, Wednesday, 18:04
	Lecture 05
		uploaded
		
2007-01-31, Wednesday, 10:47
	Lecture 04
		slide 6: changed D(w) -> g(w)
		slide 7: inserted "(V = L^3)"
	Lecture 06 - Bloch Theorem
		uploaded