Posted by Mo Farah on January 27, 2013, 3:50 pm, in reply to "Re: Momentum"
Thank you. I think your explanation helps, although it still is confusing to me. Maybe it will become more clear as we get further into the book. For now, would it be correct enough to think of it as being just the fact that adding 2pi/a to k leaves the normal mode unchanged?
And by the way, I'm not the real Mo Farah.
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