Sphereland - Dionys Burger - Foreword by Isaac Asimov

Foreword by Isaac Asimov

Sphereland: A Fantasy About Curved Spaces and an Expanding Universe

1965 novel by Dionys Burger

Barnes & Noble 1983

a sequel to Flatland, a novel by "A Square".

The novel expands upon the social and mathematical foundations on which Flatland is based. It is markedly different from the first novel in that it has a more prosaic ending and treatment of society.

Hakusanoja sphere land matematiikka astronomia astrofysiikka sphere land flat science fiction geometria topologia trigonometria