Part III: The Circumference and the Hieroglyphic Monad in In Operibus Sigillo Dei Aemeth by David Richard Jones.

“The Sigillum, as noted above, begins with the 4T and ends with the ω. The placement of the initial letter of the Sigillum’s symbolic construction may also be an allusion to the principle of AZOTh, T in the Angelic alphabet being Gisg, its last letter.” [via]