The Mathematical Symbols of AI & ML

The notation is what stalls most people, not the ideas. This is a symbol-by-symbol reference for the math of AI, machine learning, deep learning, and LLMs, each symbol explained in plain language with the formula you meet it in and a micro-diagram of what it actually does. It runs from the everyday operators and Greek letters through classic ML notation to the deep-learning and LLM symbols. Built to be skimmed and bookmarked.

A symbol-by-symbol reference for the math notation of AI, ML, deep learning, and LLMs. Each symbol gets a plain-English meaning, the formula you actually see it in, the confusion it causes, and a micro-diagram of what it does. It runs from the everyday operators (Σ, ∏, ∫, ∂) and Greek letters (α, λ, σ, π) through classic ML notation (x, X, y and ŷ) to the deep-learning and LLM symbols like scaled dot-product attention and the top-p knob.