## Abstract

Given an undirected graph G = (V,E) and a delta-matroid (V,F), the delta-matroid matching problem is to find a maximum cardinality matching M such that the set of the end vertices of M belongs to F. This problem is a natural generalization of the matroid matching problem to delta-matroids, and thus it cannot be solved in polynomial time in general. This paper introduces a class of the delta-matroid matching problem, where the given delta-matroid is a projection of a linear delta-matroid. We first show that it can be solved in polynomial time if the given linear delta-matroid is generic. This result enlarges a polynomially solvable class of matching problems with precedence constraints on vertices such as the 2-master/slave matching. In addition, we design a polynomial-time algorithm when the graph is bipartite and the delta-matroid is defined on one vertex side. This result is extended to the case where a linear matroid constraint is additionally imposed on the other vertex side.

Original language | English |
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Pages (from-to) | 942-961 |

Number of pages | 20 |

Journal | SIAM Journal on Discrete Mathematics |

Volume | 28 |

Issue number | 2 |

DOIs | |

Publication status | Published - 2014 |

Externally published | Yes |

## Keywords

- Constrained matching
- Delta-matroid
- Mixed matrix theory
- Polynomial-time algorithm

## ASJC Scopus subject areas

- Mathematics(all)