  High resolution imaging of inner jets in Active Galactic Nuclei (AGNs) with
VLBI at millimeter wavelengths provides deep insight into the launching and
collimation mechanisms of relativistic jets. The BL Lac object, PKS 1749+096,
shows a core-dominated jet pointing toward the northeast on parsec-scales
revealed by various VLBI observations. In order to investigate the jet
kinematics, in particular, the orientation of the inner jet on the smallest
accessible scales and the basic physical conditions of the core, in this work
we adopted a super-resolution technique, the Bi-Spectrum Maximum Entropy Method
(BSMEM), to reanalyze VLBI images based on the Very Long Baseline Array (VLBA)
observations of PKS 1749+096 within the VLBA-BU-BLAZAR 7 mm monitoring program.
These observations include a total of 105 epochs covering the period from 2009
to 2019. We found that the stacked image of the inner jet is limb-brightened
with an apparent opening angle of 50{\deg}.0 +/- 8{\deg}.0 and 42{\deg}.0 +/-
6{\deg}.0 at the distance of 0.2 and 0.3 mas (0.9 and 1.4 pc) from the core,
corresponding to an intrinsic jet opening angle of 5{\deg}.2 +/- 1{\deg}.0 and
4{\deg}.3 +/- 0{\deg}.7, respectively. In addition, our images show a clear jet
position angle swing in PKS 1749+096 within the last ten years. We discuss the
possible implications of jet limb brightening and the connection of the
position angle with jet peak flux density and gamma-ray brightness.
