invariant invariant  /ɪn ˈvɛ ri ənt/


  1. (n) a feature (quantity or property or function) that remains unchanged when a particular transformation is applied to it
  2. (adj) unaffected by a designated operation or transformation
  3. (adj) unvarying in nature




  1. ...that the success of Infosys has not been an accidental by-product of the global outsourcing trend but a story of multiple factors including transformation and leadership, Mr Murthy told the CEO Conclave earlier, "the five time-invariant...
    on Jan 8, 2007 By: NR Narayana Murthy Source: Economic Times

  2. "In some respects the solution of the Kervaire invariant problem is like the proof of Fermat's last theorem in the 1990s," says Hatcher. "The importance lies with the new tools, techniques and insights that were developed to get the...
    on May 1, 2009 By: Allen Hatcher Source: (subscription)

Word of the Day
untenable untenable
/ən ˈtɛ nə bəl /