mutual dealings or connections or communications among persons or groups | dealings; relations; |

the relation between causes and effects | causality; |

a relation between people; (`relationship' is often used where `relation' would serve, as in `the relationship between inflation and unemployment', but the preferred usage of `relationship' is for human relations or states of relatedness) | human relationship; relationship; |

a relation such that one thing is dependent on another | function; |

a cooperative relationship between people or groups who agree to share responsibility for achieving some specific goal | partnership; |

a relation between persons | personal relation; personal relationship; |

a close personal relationship that forms between people (as between husband and wife or parent and child) | bonding; |

a personal relation in which one is indebted for a service or favor | indebtedness; obligation; |

the formation of a close personal relationship between women | female bonding; |

the formation of a close personal relationship between men | male bonding; |

the attachment that forms between an infant and its mother beginning at birth | maternal-infant bonding; |

a relation resulting from interaction or dependence | association; |

a relation between propositions | logical relation; |

two propositions are contradictories if both cannot be true (or both cannot be false) at the same time | contradictory; |

a logical relation such that two propositions are contraries if both cannot be true but both can be false | contrary; |

a relation between mathematical expressions (such as equality or inequality) | mathematical relation; |

(mathematics) a mathematical relation such that each element of a given set (the domain of the function) is associated with an element of another set (the range of the function) | function; map; mapping; mathematical function; single-valued function; |

a function expressed as a sum or product of terms | expansion; |

a function obtained by expressing the dependent variable of one function as the independent variable of another; f and g are inverse functions if f(x)=y and g(y)=x | inverse function; |

a function of two variables i and j that equals 1 when i=j and equals 0 otherwise | kronecker delta; |