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20 มีนาคม 2021, 22:56
In order theory, a field of mathematics, an incidence algebra is an associative algebra,
defined for every locally finite partially ordered set and commutative ring with unity.
Subalgebras called reduced incidence algebras give a natural construction of
various types of generating functions used in combinatorics and number theory.
defined for every locally finite partially ordered set and commutative ring with unity.
Subalgebras called reduced incidence algebras give a natural construction of
various types of generating functions used in combinatorics and number theory.