To be blunt about the subject, if a bottle of oil does not contain the following basic information then DO NOT buy it look for something that does! 1  The purpose for which it is intended (i.e. 2  Motor oil, Gear oil etc). 3  The viscosity (i.e. 10w-40, 5w-30 etc for Motor oils and 80w-90, 75w-90 etc for Gear oils).
The definition of an incursion is an invasion, or the act of entering into an activity or place. 1  An example of an incursion is a military brigade entering enemy territory. 2  An example of an incursion is taking an art class to get a little experience into painting.
Recursion in computer science is a method where the solution to a problem depends on solutions to smaller instances of the same problem (as opposed to iteration). The approach can be applied to many types of problems, and recursion is one of the central ideas of computer science. The power of recursion evidently lies in the possibility of defining an infinite set of objects by a finite statement.