Abstract

In ‘Two Autonomous Axiom Systems for the Calculus of Probabilities’ by K. R. Popper in No. 21 (May 1955):p. 52, line 1 : for the first occurrence of ‘1.1’ read ‘1.1’.p. 52, line 3 : for ‘1.2’ read ‘1.2’.p. 55, line 1 : insert ‘the smallest’ before ‘systems’.p. 55, line 8 should read : p(x, y) = lin p(xn, Yn),p. 56, axiom D.I : for the last occurrence of ‘y’ read ‘¯y’.