Note 36 — Chapter I · A SHORT HISTORY OF METAGEOMETRY.
Reading edition
Such surfaces are by no means particularly remote. One of them, for example, is formed by the revolution of the common Tractrix
x = a sin φ, y = a (log tan φ 2 + cos φ).
Reading edition
Such surfaces are by no means particularly remote. One of them, for example, is formed by the revolution of the common Tractrix
x = a sin φ, y = a (log tan φ 2 + cos φ).