## Abstract

We give a combinatorial proof that the coefficient of z^{AB} in a certain rational function is a sum of two binomial coefficients.

Original language | English (US) |
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Pages (from-to) | 105-114 |

Number of pages | 10 |

Journal | Discrete Mathematics |

Volume | 83 |

Issue number | 1 |

DOIs | |

State | Published - Jul 1 1990 |

### Bibliographical note

Funding Information:School of Mathematics, University of Minnesota, Minneapolis, MN 55455. This work was partially supported by a fellowship from the Sloan Foundation, and by NSF grant DMS:8700995.

Funding Information:

School of Mathematics, University of Minnesota, Minneapolis, MN 55455. This work was partially supported by NSF grant DMS:8501332.

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