The artwork shows or is based on the correlation of the idea of an ideal human proportions with GEOMETRY described by an ancient Roman architect Vitruvius, a part in book III of his treatise called “de architectural”.
An image that shows mathematics and art, here as a graffiti, in the old time it was the Renaissance and shows Leonardo’s deep, deep understanding and knowledge of proportion.
Leonardo da Vinci’s drawing was a combination....the knowledge of old ancient text with Leonardo’s own observations of the human bodies.
This great Art from good old Leonardo is often used as an symbol of the essential symmetry of the human body, and by extension, also the symmetry of the universe.
My tribute to 
Love&Light
Rise&Shine
@akashas