Which famous mathematician famously endorsed Texas Instruments' graphing calculators in the 1990s, leading to their widespread adoption in advanced mathematics education?

In the world of mathematics education, certain tools and technologies have achieved iconic status partly due to endorsements from renowned mathematicians and educators. These endorsements have significantly shaped classroom adoption and even influenced teaching methodologies. Test your knowledge about these influential partnerships that have transformed how mathematics is taught and learned globally.

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John Conway, who demonstrated its applications in cellular automata and game theory
Andrew Wiles, who credited it for computational verification in his Fermat's Last Theorem proof
Benoit Mandelbrot, who showcased its ability to visualize fractal mathematics and complex patterns
Roger Penrose, who highlighted its utility in generating tilings and non-Euclidean geometry