ABOUT THE COVER: THE NEWTON-LEIBNIZ CONTROVERSY.

The article focuses on the controversy between Isaac Newton and Gottfried Wilhelm von Leibniz in relation to the invention of calculus in the late 17th century. An evidence that Newton had some ideas about the calculus as early as his famous annus mirabilis in 1666, and hints of calculus in the work of his predecessors in England, in particular the writings of John Wallis and Isaac Barrow, is mentioned.