P^2+Σ2P

What is tropical geometry ? EX1. K is algebraic closure, and V is closed manifold. This is the tropical manifold. EX2. 6x^2→2x+1, 5xy→x+y, 10y^2→2y+1, 3x→x, -y→ y, 4→2

This is the development of a cohomological theory. You may call it tropical geometry. EX. You see P^3→P^2, so this seems to be fractal . Bmod is the replacement for the category of abelian groups. For all a, b in A, a • b = b • a C admits equalizers Equ and coequalizers Coequ. This is the natural morphism.