: " Economists' Mathematical Manual " by Sydsæter, Strøm, and Berck serves as a concise summary of formulas and results for those who already have foundational knowledge. Mathematical Analysis For Economists : Allen, Rgd - Amazon
: "Mathematics for Economists" by Simon and Blume is frequently used as a reference text for math "summer camps" before starting a doctoral program. Mathematical analysis for economists
: The book covers essential topics including numerical series, functions of two variables, double and improper integrals, and differential equations. : " Economists' Mathematical Manual " by Sydsæter,
: "Fundamental Methods of Mathematical Economics" by Kevin Wainwright and Alpha Chiang is often recommended for better explanations in these specific areas. functions of two variables