Chapter 46-Equations for Ramanujan Class Invariants and the Ramanujan Ladder

Chapter46 (2)

Attached are useful formula for those interested in calculating Ramanujan class invariants and examining the relationships to the properties of the associated octahedron, the Ramanujan octaves and the Ramanujan ladder. Many of the formula are discussed in Chapters 28 to 32 in the Perrin Chalkboard.