代数几何中的 Chow 环成功涌现出相对论时空Chow Ring in Algebraic Geometry Successfully Gives Rise to Relativistic Spacetime
A local Lorentzian signature emerging from the intersection form of a Chow ring on a product of projective lines.
Beauty is thesplendour of truth.
This is D.797's personal home. It will slowly gather notes on physics, code, interfaces, and the act of thinking itself. There is no fixed schedule and no attempt to explain everything. Think of it as an open sheet of paper: finished thoughts are written down, and unfinished ones are allowed to keep their space. Start with the Notes, or browse the Archive by date. Code and other projects live on GitHub.
常微分方程Ordinary Differential Equations
From algebraic equations to the essence and geometric meaning of ordinary differential equations.
矩阵乘法、张量、向量的共通本质
矩阵乘法的本质是线性组合；矩阵乘法与张量积是同一个双线性结构的不同排布表现。