reciprocity

  • 131kinship — /kin ship/, n. 1. the state or fact of being of kin; family relationship. 2. relationship by nature, qualities, etc.; affinity. [1825 35; KIN + SHIP] Syn. 1. See relationship. 1, 2. connection. 2. bearing. * * * Socially recognized relationship… …

    Universalium

  • 132Exact differential — In mathematics, a differential dQ is said to be exact , as contrasted with an inexact differential, if the differentiable function Q exists. However, if dQ is arbitrarily chosen, a corresponding Q might not exist. OverviewIn one dimension, a… …

    Wikipedia