Analysis of information sources in references of the Wikipedia article "Artistic canons of body proportions" in English language version.
Trajan was, in fact, quite active in Egypt. Separate scenes of Domitian and Trajan making offerings to the gods appear on reliefs on the propylon of the Temple of Hathor at Dendera. There are cartouches of Domitian and Trajan on the column shafts of the Temple of Knum at Esna, and on the exterior a frieze text mentions Domitian, Trajan, and Hadrian
The canon of Polykleitos was heavy and square, his statues were quadrata signa, the canon of Lysippos was more slim, less fleshy
we are told quite unequivocally that he related every part to every other part and to the whole and used a mathematical formula in order to do so. What that formula was is a matter of conjecture.
In the fourth century BCE, Lysippos drew up a canon of proportions for a more elongated figure that that defined by Polykleitos in the previous century. According to Lysippos, the height of the head should be one-eighth the height of the body, and not one-seventh, as Polykleitos recommended.
