- Research style: both
**Collaborative**à la “PolyMath” Project & “**Lone Wolf**” à la Andrew Wiles (“The Fermat’s Last Theorem”), G. Perelman (“The Poincaré Conjecture”) or Zhang Yitang 张益唐 (“70-million Gap in Twin Primes”) - Not attempting the Riemann Hypothese: tools not there yet.
- His Weakness in Math:
**Algebraic Topology (拓扑代数) [*]**

[*]** **Algebraic Topology: apply algebra (linear) in Topology: eg. Homology (同调), Co-homology (上同调), Homotopy (同伦) or Homological algebra, etc. A powerful applied mathematics used in Big Data Analytics.

**3 Phases of Math Training**:

**Pre-rigourous**: intuition à la*Ramanujian***Rigorous**: formal proof**Post-rigourous**: 1 + 2 (intuitive bold “*cheating*” guess, followed by rigorous proof)