MathCast helps students, researchers, and developers quickly find and copy mathematical symbols and LaTeX notation from the web and PDFs. Search 566+ symbols using natural language, Unicode, LaTeX, or categories. Select text, open Spotlight Search, preview rendered formulas with KaTeX, and copy exactly what you need. Features: • Natural language search (Pearson, derivative, sigma, softmax) • Unicode and LaTeX copy support • Works with web pages and PDF documents