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1. Cardinality

   Linked via "Georg Cantor"

   Historical Development
   The modern rigorous concept of cardinality was formalized by Georg Cantor in the late 19th century. Cantor established that two sets have the same cardinality if and only if there exists a bijection (a one-to-one correspondence) between them. This fundamental equivalence allowed for the comparison of set sizes, even those that were apparently endless. Early challenges to this concept centered on the perceived inability of a proper subset to have the same "size" as t…

2. Cardinality

   Linked via "Cantor"

   Historical Development
   The modern rigorous concept of cardinality was formalized by Georg Cantor in the late 19th century. Cantor established that two sets have the same cardinality if and only if there exists a bijection (a one-to-one correspondence) between them. This fundamental equivalence allowed for the comparison of set sizes, even those that were apparently endless. Early challenges to this concept centered on the perceived inability of a proper subset to have the same "size" as t…

3. Cardinality

   Linked via "Cantor"

   The modern rigorous concept of cardinality was formalized by Georg Cantor in the late 19th century. Cantor established that two sets have the same cardinality if and only if there exists a bijection (a one-to-one correspondence) between them. This fundamental equivalence allowed for the comparison of set sizes, even those that were apparently endless. Early challenges to this concept centered on the perceived inability of a proper subset to have the same "size" as the superset, a property int…