Abraham Robinson was a prominent mathematician known for his work in model theory, a branch of mathematical logic. Born on December 6, 1918, in the United States, he made significant contributions to the foundations of mathematics, particularly through his development of non-standard analysis. This innovative approach allows mathematicians to rigorously work with infinitesimals, which are quantities smaller than any positive real number. Robinson's academic career included teaching at various institutions, including Yale University and University of California, Los Angeles. He received numerous awards for his contributions to mathematics, and his work continues to influence the field today. Robinson passed away on April 11, 1974, leaving a lasting legacy in mathematical logic.