#14163: add counit method to QSym
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Reporter: saliola | Owner: sage-combinat
Type: enhancement | Status: new
Priority: major | Milestone: sage-5.8
Component: combinatorics | Keywords: qsym, hopf algebras
Work issues: implement the counit | Report Upstream: N/A
Reviewers: | Authors:
Merged in: | Dependencies:
Stopgaps: |
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The Hopf algebra of quasisymmetric functions is missing the counit method.
{{{
sage: QSym = QuasiSymmetricFunctions(QQ)
sage: F = QSym.Fundamental()
sage: F.counit
sage:
}}}
Without the counit, {{{_test_antipode}}} at #14161 fails for QSym
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Ticket URL: <http://trac.sagemath.org/sage_trac/ticket/14163>
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