Errata for “ Iwahori – Hecke algebras and Schur algebras of the symmetric group ”
Errata for “ Iwahori – Hecke algebras and Schur algebras of the symmetric group ”
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发表时间:
2012
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通讯作者:
C. Hapter
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作者:
C. Hapter
Page 17, line -2: Replace “...and one can check that C∗λ ∼= HomR(C, R)” with “and HomR(C, R) is a right A– module with A–action given by (f · a)(x) = f(ax), for f ∈ HomR(C, R), a ∈ A and x ∈ C∗λ). Page 21, proof of 2.18: Delete “that C ∼= HomR(C , R) as right A–modules. Therefore” and after the displayed equation add “Hence, dimP⊗AC = [HomR(C , R) : D] = dνλ since HomR(D, R) ∼= D wheneverD 6= 0.” Page 24, exercise 7(i). Delete “In addition, show that C ∼= HomR(C, R) for all λ ∈ Λ. Page 25, line 3: change parenthetical remark to (the four Kazhdan–Lusztig bases {Cx}, {C ′ x}, {Dx} and {D′ x} of H (Sn) are all cellular; however, this is not true for Hecke algebras of other types).