Mathematical Work
Within the academic discipline of mathematics, Dodgson worked primarily in the fields of geometry, matrix algebra, mathematical logic and recreational mathematics, producing nearly a dozen books under his real name. Dodgson also developed new ideas in the study of elections (e.g., Dodgson's method) and committees; some of this work was not published until well after his death. He worked as a mathematics tutor at Oxford, an occupation that gave him some financial security.
His mathematical work attracted renewed interest in the late 20th century. Robbins' and Rumsey's investigation of Dodgson Condensation, a method of evaluating determinants, led them to the Alternating Sign Matrix conjecture, now a theorem.
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