# Juan G. Escudero

This works are based on recent research in algebraic geometry concerning highly singular surfaces ("A construction of algebraic surfaces with many real nodes". Annali di Matematica Pura ed Applicata, http://dx.doi.org/10.1007/s10231-015-0478-y. (2015); "Arrangements of real lines and surfaces with A and D singularities". Experimental Mathematics, Vol. 23, n.4, pp. 482-491. (2014); "On a family of complex algebraic surfaces of degree 3n". Comptes Rendus MathÃ©matique. Vol. 351, n.17-18, p.699 (2013). MR3124329, Zbl 1283.14013). Explorations of the interactions of mathematics with the sound and visual arts have potential interest when an anti-genealogy emerges.

In order to get threefolds with vanishing of the first Chern class
and absolute value of the Euler number not large but different
from zero, F. Hirzebruch studied the cases where the threefold has
singularities and then resolve them ("Some examples of threefolds
with trivial canonical bundle." In Gesammelte Abhandlungen,

Bd. II, pp. 757-770, Springer, 1987). The work 21A1+6A4-CY-v2 is
related to a threefold constructed with a curve having 21 nodes
and 6 A4 singularities.

Surfaces of degrees 6, 9 and 12, with 59, 220 and 581 nodes
respectively have been used for the generation of d6-d9-d12.