Their collaborative work on "Mathematics for Economists" has left a lasting legacy, providing a model for future textbook authors and influencing the development of mathematical economics as a field.
It wasn't a glitch. It wasn't an error in his calculation. It was the nature of the beast. The economy he was modeling wasn't designed to find peace; it was designed to race toward a cliff, slowing down only to admire the view before the fall. Their collaborative work on "Mathematics for Economists" has