On the location of zeros of a polynomial

  title={On the location of zeros of a polynomial},
  author={Vinay Kumar Jain},
Observing that for the zeros of polynomial p(z) = zn+ n−1 j=0 a jz j, Cauchy’s bound |z| < 1 + A, A = max 0≤ j≤n−1 |a j| does not reflect the fact that for A → 0, all zeros approach the origin z = 0, Boese and Luther suggested the proper bound |z| < R′, 

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