Abstract algebra is the set of advanced topics of algebra that deal with abstract algebraic structures rather than the usual number systems. The most important of these structures are groups, rings, and fields. Important branches of abstract algebra are commutative algebra, representation theory, and homological algebra. Linear algebra, elementary number theory, and discrete mathematics are sometimes considered branches of abstract algebra.
Processing Time: Depends on area of jurisdiction. Approximately seven (7) to ten (10) working days for most Free zones and ten (10) to fifteen (15) working days for others, but may be expedited. The employment visa application should be submitted to the respective jurisdictional immigration authorities in the UAE.
That means for example, if a visit visa is issued on 01 September 2008, then you can use it to enter the UAE anytime from 01 September 2008 until 31 October 2008, after which you can stay up to 30 days (or 60 days or 90 days or whatever period it allows-see visit visas Dubai for a table).fter the 2 month period, the permit expires and you will have to apply for a new one. This applies to entry permits for tourists, visitors, employment, residence, etc. Normally your employer will arrange cancellation of your residence visa and work permit when the time comes to leave the UAE, or when changing jobs.