This doctor who screencap might contain
calle, escena de la ciudad, entorno urbano, configuración de la escena de calle, ciudad, urbano, signo, cartel, texto, pizarra, letrero, institución penal, centro penitenciario, institución penitenciaria, and penal centro.
In the first issue of the Doctor Who comic libros published in America , an introduction to the character included a peculiar mathematic equation as his "real name." The Doctor's real name is also dado as d³Σx² or: ∂³∑x²