Without a solution manual, you verify your proof by checking if it contradicts any of Kreps’ corollaries in the text. If your proof does not explicitly use the WARP condition at every step, it is wrong.
The brilliance of Kreps lies in his ability to force students to "get their hands dirty." He does not merely present the First Welfare Theorem; he asks the student to prove its existence, its limitations, and its robustness. Consequently, the solutions to his problems are not just answers—they are lessons in economic logic. Kreps A Course In Microeconomic Theory Solutions
Finding a complete, official solutions manual for David M. Kreps' A Course in Microeconomic Theory Without a solution manual, you verify your proof
: Analyzing Marshallian and aggregate demand, often without the immediate use of derivatives. The Price Mechanism General Equilibrium : Pure exchange economies and the Edgeworth Box. Social Efficiency Consequently, the solutions to his problems are not