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HECKE OPERATORS AND DRINFELD CUSP FORMS OF LEVEL
$\boldsymbol {t}$
Published online by Cambridge University Press: 15 June 2022
Abstract
We use a linear algebra interpretation of the action of Hecke operators on Drinfeld cusp forms to prove that when the dimension of the
$\mathbb {C}_\infty $
-vector space
$S_{k,m}(\mathrm {{GL}}_2(\mathbb {F}_q[t]))$
is one, the Hecke operator
$\mathbf {T}_t$
is injective on
$S_{k,m}(\mathrm {{GL}}_2(\mathbb {F}_q[t]))$
and
$S_{k,m}(\Gamma _0(t))$
is a direct sum of oldforms and newforms.
- Type
- Research Article
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- Copyright
- © The Author(s), 2022. Published by Cambridge University Press on behalf of Australian Mathematical Publishing Association Inc.
References
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