Introduction

1. Geometric and number-theoretic visions of physics as duals of each other

2. New understanding of strong and other interactions

3. Different perspectives on hadron physics

Phenomenological description of strong interactions in TGD

1. The generalization of the QCD description of hadronic reactions

2. General form for the hadron mass formula assuming mass squared additivity

3. An estimate for the value of the parameter $M_0^2$ from color magnetic spin-spin splitting

p-Adic mass calculations and the phenomenological picture

1. Some objections against p-adic calculations

2. p-Adic mass calculations in the hadronic sector

3. Deducing the quark masses from baryon masses

4. Are the quark masses deduced from baryons consistent with the mass spectrum of mesons?

Strong interactions as p-adically scaled weak interactions

1. Reflections on parity violation

2. Weak screening

3. How to understand Weinberg angle in TGD framework