OLIVEIRA, Marciel Santiago de.
Resumen:
In thiswork,let'stalkabout nitegroupsandprovetheLagrange'sTheorem,giving
some ofitsapplications.InChapter1,wede neGroups,withtheirproperties,and
subgroups. Webuildingthegroupsoftheresidualclasses Zn and thegroupoftheper-
mutations Sn. AttheChapter2,wede nethecosets,andweprovedtheLagrange's
Theorem. AttheChapter3,wegivesomeoftheTheoremapplicationslagrangeand
wetalkedalittlebitabouttheirreciprocal,thatisnotvalid.