deletions | additions       diff --git a/Now_this_is_what_I__.tex b/Now_this_is_what_I__.tex  index d4e6510..94cf06a 100644  --- a/Now_this_is_what_I__.tex  +++ b/Now_this_is_what_I__.tex 
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Now this is what \textbf{Summary:}I tried to understand the basic reasons for QHE, and TI.  I understand. hope to understand the details of TI edge states through SSH model.  I need to study more to make the connections from SSH model to topological insulator. And then I will try to expand the model from this 1D model to 2D model called "Qi-Wu-Zhang" model.