Template:Are You Sure/April 19
• ... that mathematician and academic Giuseppe Peano was a founder of mathematical logic, to which Peano made key contributions to the rigorous and systematic treatment of the method of mathematical induction, and set theory, to which he contributed much notation, and that the standard axiomatization of the natural numbers is named the Peano axioms in his honor?
• ... physicist, electrical engineer, and inventor Karl Ferdinand Braun built the first cathode-ray tube and cathode ray tube oscilloscope in 1897?
• ... that Baby Sarlaac is a trade name for a juvenile sarlaac, and that the sarlaac is currently under Extraterrestrial Species Act review by the U.S. Space & Alien Life Service due to the rapid decline of the sarlaac population in its native range?