A pseudo-quaternionic Mandelbrot set (a 'MandelBulb') -tridimensional cross-section- [Un ensemble de Mandelbrot dans l'ensemble des pseudo-quaternions (un 'MandelBulb') -section tridimensionnelle-].

                    P(q) = 1*q + q
                                  C

                                       8
                    fR(R ,R ) = (R *R )
                        1  2      1  2

                    fT(T ,T ) = 8*(T +T )
                        1  2        1  2

                    fP(P ,P ) = 8*(P +P )
                        1  2        1  2

                    fA(A ,A ) = 8*(A +A )
                        1  2        1  2