@article{udoaka2026,
  title={Free Inverse Semigroups: Scheiblich and Wagner Constructions, Universal Properties, and Algebraic Applications},
  author={Udoaka and O. G.},
  year={2026},
  journal={Ktrend - International Journal of Mathematics and Statistics (IJMS)},
  volume={1},
  number={2},
  pages={1-11},
  doi={10.5281/zenodo.21461266},
  url={https://doi.org/10.5281/zenodo.21461266}
}