- #1
barnflakes
- 156
- 4
I don't understand the step between equations 2.17 - 2.18 in these notes:
http://www.theory.caltech.edu/people/preskill/ph229/notes/chap2.pdf
Can somebody explain what's happening there to me please?
http://www.theory.caltech.edu/people/preskill/ph229/notes/chap2.pdf
Can somebody explain what's happening there to me please?