The above survey was 2009 USA Job Market.

By 2018, Number 1 Job is AI / Data Scientist in USA / China / Europe high-tech market, which still needs Mathematics. eg.

- Linear Algebra (Matrix)
- Calculus (eg. Gradient descent, …)
- Bayesian Statistics (Probability),
- Algebraic Topology (eg. Homological Algebra, etc),
- Abstract Algebra (eg. Category Theory, etc…)
- etc.