We describe the singularities and related properties of the arrangement of 21 reducible polars of Klein’s quartic, containing Klein’s well-known arrangement of 21 lines.
- 14H50; 14C17, 14J26, 14C20, 14N05, 14E05, 13A15, 13F20
- Klein quartic curve
- line arrangements
- plane curve arrangements
- symbolic and ordinary powers of ideals