124 citations · 735 across the 42 of their papers we have counts for
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math.CO2003
On operators on polynomials preserving real-rootedness and the Neggers-Stanley Conjecture
Petter Brändén
We refine a technique used in a paper by Schur on real-rooted polynomials. This amounts to an extension of a theorem of Wagner on Hadamard products of Toeplitz matrices. We also ap…
math.CO2003★ 7 cited
The generating function of two-stack sortable permutations by descents is real-rooted
Petter Brändén
The paper is withdrawn since the results are included in arXiv:math/0403364.