Mathematical papers seem to require coffee for their production [1] and their consumption. [1] https://en.wikipedia.org/wiki/Alfr%C3%A9d_R%C3%A9nyi#Quotations

Mathematical papers seem to require coffee for their production [1] and their consumption. [1] https://en.wikipedia.org/wiki/Alfr%C3%A9d_R%C3%A9nyi#Quotations https://en.wikipedia.org/wiki/Alfr%C3%A9d_R%C3%A9nyi#Quotati...