DYNAMICAL SYSTEMS
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1.  Dynamical Systems - G. Birkhoff.
2.  Dynamical Systems and Fractals - Computer Graphics Exper. in  Pascal 
      - K. Becker, M. Dorfler.
3.  Elementary Catastrophe Theory - P. Michor.
There is nothing to writing. All you do is sit down at a typewriter and bleed.” ~Ernest Hemingway
For you and me, that’s the hardest part: to bleed.
But for these authors, weaving beautiful words into heart-touching romance comes naturally. Come, fall in love…with words.
Because other than your partner, only a writer can give you a rapidly pumping heart out of love.
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Source : Story Pick