Totally positive Toeplitz matrices and quantum cohomology of partial flag varieties. Rietsch, K. J. Amer. Math. Soc., 16(2):363–392 (electronic), 2003.
Totally positive Toeplitz matrices and quantum cohomology of partial flag varieties [link]Paper  doi  bibtex   
@Article{	  rie:03,
  author	= {Rietsch, Konstanze},
  title		= {Totally positive {T}oeplitz matrices and quantum
		  cohomology of partial flag varieties},
  journal	= {J. Amer. Math. Soc.},
  fjournal	= {Journal of the American Mathematical Society},
  volume	= {16},
  year		= {2003},
  number	= {2},
  pages		= {363--392 (electronic)},
  issn		= {0894-0347},
  doi		= {10.1090/S0894-0347-02-00412-5},
  url		= {http://dx.doi.org/10.1090/S0894-0347-02-00412-5}
}

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