An Intent is an intention to perform an action; in other words, a messaging object you can use to request an action from another app component An Intent is basically a message to say you did or want something to happen. Depending on the intent, apps or the OS might be listening for it and will react accordingly.
Mathematicians consider Descartes of the utmost importance for his discovery of analytic geometry. Up to Descartes's times, geometry, dealing with lines and shapes, and algebra, dealing with numbers, appeared as completely different subsets of mathematics.
RenÃ© Descartes (1596 - 1650) was a French philosopher, mathematician, scientist and writer of the Age of Reason. He has been called the Father of Modern Philosophy, and much of subsequent Western philosophy can be seen as a response to his writings.