Building on the recent work of C. De Lellis and L. Sz\'{e}kelyhidi, we
construct global weak solutions to the three-dimensional incompressible Euler
equations which are zero outside of a finite time interval and have velocity in
the H\"{o}lder class Ct,x1/5−ϵ​. By slightly modifying the
proof, we show that every smooth solution to incompressible Euler on (−2,2)×T3 coincides on (−1,1)×T3 with some
H\"{o}lder continuous solution that is constant outside (−3/2,3/2)×T3. We also propose a conjecture related to our main result that
would imply Onsager's conjecture that there exist energy dissipating solutions
to Euler whose velocity fields have H\"{o}lder exponent 1/3−ϵ.Comment: Minor corrections throughout text and some added detail