Is the reason why the Lorentz transformations form a group because of the reason on this website(adsbygoogle = window.adsbygoogle || []).push({});

http://en.wikipedia.org/wiki/Lorentz_transformation_under_symmetric_configuration [Broken]

So the group consits of 3 matrices, {identity, forward transformations, inverse transformations}?

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# Why does the Lorentz transformations form a group?

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