The Prouhet-Thue-Morse constant, defined as
$$ \tau =\sum _{{i=0}}^{{\infty }}{\frac {t_{i}}{2^{{i+1}}}}=0.412454033640\ldots $$
where the $t_i$ are elements of the Thue-Morse sequence, is transcendental. But is
$$ \tau_b =\sum _{{i=0}}^{{\infty }}{\frac {t_{i}}{b^{{i+1}}}} $$
also transcendental, for $b>2$?
The answer is of course yes, see the MaothOverflow post here.