On April 8, 1796, the German mathematician Carl Friedrich Gauss proved the quadratic reciprocity law (the ability to determine the solvability of any quadratic equation in modular arithmetic.)
—
Today’s feature piece is a guest post that was too short to qualify as an entry for the SurvivalBlog non-fiction writing contest. More than $984,000 worth of prizes have been awarded since we started running the contest. Round 124 ends on May 31st, so get busy writing and e-mail us your entry. Remember that there is a 1,500-word minimum, and that articles on practical “how-to” skills for survival have an advantage in the judging. In 2023, we polled blog readers, asking for suggested article topics. Please refer to that poll if you haven’t yet chosen an article topic.