This research paper presents the development of a custom ROM for OnePlus Nord device. The is built on foundation AOSP and can be easily installed without encountering any critical issues. provides users with access to latest Android version, timely security patches, necessary kernel upstream updates, ensuring reliable up-to-date user experience. also offers greater customization possibilities, ...

We investigate two operators on classes of regular languages: polynomial closure ( $$Pol$$ ) and Boolean $$Bool$$ ). apply these to group languages $$\mathcal {G}$$ their well-suited extensions {G} ^+$$ , which is the least algebra containing $$ $$\{\varepsilon \}$$ . This yields $$Bool(Pol(\mathcal {G}))$$ ^+))$$ These form first level in important classifications languages, called concatenati...