The system will then decay to a state of closed strings and/or stable D-branes. If the tachyon is a closed string vibrational mode, this indicates an instability in spacetime itself. Generally, it is not known (or theorized) what this system will decay to. However, if the closed string tachyon is localized around a spacetime singularity, the endpoint of the decay process will often have the singularity resolved. Goan Muslims  The Goan Muslims are a minority community who follow Islam in the western Indian coastal state of Goa. They are native to Goa, unlike recent Muslim migrants from Karnataka. They are commonly referred as "Moir" () by Goan Catholics and Hindus. "Moir" is derived from the Portuguese word "mour" (Moors). The Portuguese called them "Mouros" because they (and the Spaniards in contact with the Muslims of Mauritania, who had conquered the Iberian Peninsula) were called "Mouros" and later generalized as "Mouros". Although the advent of Muslims in Goa occurred later in history, Arab geographers referred to Goa as "Sindabur" and believed that Goa had one of the best ports in western India. In 554 CE, Sidi Ali Kodupon wrote the Turkish-language book "Mohit". In the book, Goa is referred to as "Kuvah-Sindabur": a combination of the names "Kuvah" (Goa) and "Sindabur" (Chandor). The copper plate of Kadamba Jayakesi I refers to the Muslim Minister named "Chadma". While Kadamba ruler Gullhadeva I was sailing towards Somanath, his ship got involved in a naval accident and the mast of his ship broke. His grandson Jayakesi I gave Chadma, the privilege of levying the taxes on small and big boats. The amount collected by way of taxes was utilized for the maintenance of the mosques built in Goa at "Laghumorambika" (modern Merces). This copper plate goes to the extent of saying that Jayakesi I made him the Chief Minister. Later Arab Muslim commercial traders migrated to Goa by force of conquest and established their society; this was the first influx of Muslims into Goa, which led some local Hindus to migrate elsewhere. After Malik Kafur invasion and subsequently during the rule of Sultanate, there were Muslim Officers in Goa like Malik Bahadur.