2 papers
math.HO2025
The strange story of an almost unknown prime number counter: The Rafael Barrett formula
Eduardo Mizraji
In this brief article, we present the formula created by Rafael Barrett in 1903 in a note to Henri Poincaré, which remained unknown for decades. Discovered in the 1930s by a Urugua…
math.HO2025
Operators in the mind: Jan Lukasiewicz and Polish notation
Eduardo Mizraji
In 1929 Jan Lukasiewicz used, apparently for the first time, his Polish notation to represent the operations of formal logic. This is a parenthesis-free notation, which also implie…