Fibonacci Numbers – Vorob’ev

In this post, we will see the book Fibonacci Numbers by N. N. Vorob’ev. This book is a part of the Popular Lectures In Mathematics series. About the book In elementary mathematics there are many difficult and interesting problems not connected with the name of an individual, but rather possessing the character of a kind of […]

Fibonacci Numbers – Vorob’ev

An Update on the Italian Airmada of 1933

Spectators viewing Italian seaplane from Balbo flight. Victoria 1933 In 2016 I posted an entry concerning the landing of an Italian seaplane piloted by Captain Umberto Rovis on the harbour at Victoria. The aeroplane was part of a group of Italian seaplanes that flew from Rome to Chicago and return. That posting, which contains background […]

An Update on the Italian Airmada of 1933

Convex Figures and Polyhedra – Lyusternik

In this post, we will see the book Convex Figures And Polyhedra by L. A. Lyusternik. This book is a part of Topics in Mathematics series. About the book The theory of convex figures and polyhedra provides an excellent example of a body of mathematical knowledge that offers theorems with elementary formulations and vivid geometric meaning. […]

Convex Figures and Polyhedra – Lyusternik

1926: The First Flight of an Italian Seaplane

July 6, 1926 The first test flight of the racing seaplane Macchi M.39 took place in Italy. This seaplane had been designed by engineer Mario Castoldi, and it was built by the aircraft company Aeronautica Macchi (based in the city and comune of Varese in northwestern Italy). The first M.39 to take to the skies […]

1926: The First Flight of an Italian Seaplane