Avatar or Expansion of Krishna: The Qualitative Avatars

                                                                  Q. Is it correct to call Brahma, Vishnu and Shiva as the Trinity? (knowing that Brahma came from Vishnu's navel and Shiva came from Sankarsana)
                                                                   
                                                                  Brahma, Vishnu and Shiva are qualitative incarnations of the Supreme Personality of Godhead, technically called `guna avataras'. They are in charge of the three qualities or modes of material nature viz. passion, goodness and ignorance. In that sense, it is right to consider them a Trinity -- in charge of creation, maintenance and destruction of the universe, respectively.