Which mathematician's pricing algorithm revolutionized the online textbook marketplace by creating dynamic pricing that adjusts based on demand, inventory, and competitor prices?

The intersection of mathematics and retail marketing has created some fascinating success stories. Behind some of the most effective pricing models and recommendation engines are sophisticated mathematical algorithms that changed how companies operate. Test your knowledge about how mathematics has transformed retail strategy and created competitive advantages in the marketplace.

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Dr. Anna Karlin, whose adaptive pricing model for Chegg increased market share by 32% within a year of implementation
Dr. Robert Kahn, whose sequential pricing algorithm for Barnes & Noble's online store reduced inventory costs by 24%
Dr. Michael Speyer, whose probability-based discount model became the foundation for Amazon's textbook rental program
Dr. Elaine Chen, whose market equilibrium equations revolutionized McGraw-Hill's digital textbook pricing structure