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M-Theory
subjectfact 
M-Theoryis a kind of superstring theory2001-09-27 09:34:00.0
has definition Theory emerging from the second superstring revolution that unites the previous five superstring theories within a single overarching framework. M-theory appears to be a theory involving eleven spacetime dimensions, although many of its detailed properties have yet to be understood.has source: Greene, B. 1999 The Elegant Universe, W.W. Norton and Co., New York, 2001-09-27 09:34:00.0
theoryhas validity correct or incorrect with caveats2001-09-27 09:33:53.0
has author or reasearch group2001-09-27 09:33:53.0
has domain a field of research2001-09-27 09:33:53.0
has date or a range of dates for which the theory was active2001-09-27 09:33:53.0