Bulletin of the
Korean Mathematical Society BKMS

We find congruences for the $t$-expansion coefficients of a Drinfeld modular form for $\Gamma_{0}^{+}(Q)$, where $Q$ is a monic irreducible polynomial. As an application we obtain new congruence relations for the $t$-expansion coefficients of Drinfeld modular forms for $GL_{2}(\Bbb{F}_{q}[T])$.

Keywords: Drinfeld modular form, congruence

MSC numbers: 11F52