Groups
We first state the three isomorphism theorems in the context of groups. Note that some sources switch the numbering of the second and third theorems. Sometimes, the lattice theorem is referred to as the fourth isomorphism theorem or the correspondence theorem.
Read more about this topic: Isomorphism Theorem
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“Only the groups which exclude us have magic.”
—Mason Cooley (b. 1927)
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—Mary Barnett Gilson (1877–?)
“The awareness of the all-surpassing importance of social groups is now general property in America.”
—Johan Huizinga (1872–1945)