Tuesday, October 2, 2018 1:30 pm
-
1:30 pm
EDT (GMT -04:00)
Pranabesh Das, Pure Mathematics, University of Waterloo
"Variants of Erd{\H o}s--Selfridge superelliptic curves and their rational points"
For
the
superelliptic
curves
of
the
form
\[(x+1)
\cdots(x+i-1)(x+i+1)\cdots
(x+k)=y^\ell
\]
with
$y
\neq
0,
k
\geq
3$,
$\ell
\geq
2,$
a
prime
and
for
$i
\in
[2,k]
\setminus
\Omega$,
we
show
that
$\ell<
e^{3^k}$.
Here
$\Omega$
denotes
the
interval
$[p_\theta
,
(k-p_\theta))$,
where
$p_{\theta}$
is
the
least
prime
$\geq
k/2$.
Bennett
and
Siksek
obtained
similar
bound
for
$i=1$
in
a
recent
paper.
This
talk
is
based
on
a
recent
joint
work
with
Laishram
and
Saradha.