Ring of symmetric functions: Difference between revisions

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== Specializations ==

Let <math>\Lambda</math> be the ring of symmetric functions and <math>R</math> a commutative algebra with unit element. An algebra homomorphismushomomorphism <math>\varphi:\Lambda\to R,\quad f\mapsto f(\varphi)</math> is called a ''specialization''.<ref name="StanleyFomin">{{cite book|last1=Stanley|first1=Richard P.|last2=Fomin|first2=Sergey P.|title= Enumerative Combinatorics|volume=2|publisher=Cambridge University Press}}</ref>

Example: