Why is there no Nobel Prize in Mathematics?

The Nobel Prize is an international award administered by the Nobel Foundation in Stockholm, Sweden. These prizes were created by the will of Alfred Nobel, a Swedish chemist. Each prize consists of a medal, personal diploma, and a cash award. Every year since 1901 the Nobel Prize has been awarded for achievements in physics, chemistry, physiology or medicine, literature and for peace. However a prize in Mathematics is absent from this list. This even I came to know recently and wanted to know why Maths is not included, so after searching I got this result at cliqueway.wordpress.com.

One of the most unfounded reasons as to why Nobel decided against a Nobel Prize in math is that a woman he loved rejected him because of (or cheated him with) a famous mathematician. Gosta Mittag-Leffler is often claimed to be the guilty party. There is no historical evidence to support the story. But one thing is all known that Mr. Nobel was never married.

One more thing a chief purpose for creating the Nobel Foundation was to honor people who do something practical to help humanity.And Mathematics was not considered a practical science from which humanity could benefit.

Further, at the time there existed already a well known Scandinavian prize for mathematicians. If Nobel knew about this prize he may have felt less compelled to add a competing prize for mathematicians in his will.