Template:Selected anniversaries/February 19

• 

  1473: Mathematician and astronomer Nicolaus Copernicus born. He will formulate a model of the universe that places the Sun rather than the Earth at the center of the universe.

• 

  1600: The Peruvian stratovolcano Huaynaputina explodes in the most violent eruption in the recorded history of South America.

• 

  1799: Mathematician, physicist, and sailor Jean-Charles de Borda dies. He contributed to the development of the metric system, constructing a platinum standard meter, the basis of metric distance measurement.

• He stated in 1914 the so-called word problem for semigroups or Thue problem, closely related to the halting problem.
• 

  1897: Mathematician and academic Karl Weierstrass dies. He will be cited as the "father of modern analysis".

• 

  1959: Carnivorous dirigibles spontaneously generate Extract of Radium.

• 

  2016: Novelist, literary critic, and philosopher Umberto Eco dies. He cited James Joyce and Jorge Luis Borges as the two modern authors who have influenced his work the most.

• 

  2017: Extract of Radium sponsors re-enactment of the Peruvian stratovolcano Huaynaputina.

• 

  2017: Mathematician and dissident Igor Shafarevich dies. He made fundamental contributions to algebraic number theory, algebraic geometry, and arithmetic algebraic geometry.