Terminological inexactitude to accuse another member of lying is considered unparliamentary. In more recent times, the term was used by Conservative MP Jacob Rees-Mogg to the Leader of the Oppositon, Jeremy Corbyn over an accusation that Rees-Mogg's company had moved a hedge fund into the Eurozone despite him being in favour of Brexit. Terminological inexactitude Terminological inexactitude is a phrase introduced in 1906 by British politician Winston Churchill. Today, it is used as a euphemism or circumlocution meaning a lie or untruth. Churchill first used the phrase following the 1906 election. Speaking in the House of Commons on 22 February 1906 as
Representation of a Lie group are some important examples in which unitary representations of a Lie group have been analyzed. In quantum physics, one is often interested in "projective" unitary representations of a Lie group formula_8. The reason for this interest is that states of a quantum system are represented by vectors in a Hilbert space formula_206—but with the understanding that two states differing by a constant are actually the same physical state. The symmetries of the Hilbert space are then described by unitary operators, but a unitary operator that is a multiple of the identity does not change the physical state of the system.