Jefferson was quite well educated in science and mathematics for the day: http://www.math.virginia.edu/Jefferson/jefferson.htm http://www.math.virginia.edu/Jef

Jefferson was quite well educated in science and mathematics for the day: http://www.math.virginia.edu/Jefferson/jefferson.htm http://www.math.virginia.edu/Jefferson/jefferson.htm Geometry was prominent in those days, but as a student he also learned physics with Newton's Principia and Optiks as textbooks. Lincoln was mostly self-educated, but I have no idea what his background in math was.