We construct a genus zero PALF structure on each of plugs introduced by Akbulut and Yasui and describe the monodromy as a positive factorization in the mapping class group of a fiber.
The author would like to thank Hisaaki Endo for his helpful comments and his encouragement. The author wishes to thank Kouichi Yasui and Yuichi Yamada for their useful comments.
"Genus zero PALF structures on the Akbulut-Yasui plugs." Osaka J. Math. 59 (2) 363 - 368, April 2022.