Could it be, that maya, as you have defined it, exists both within the mind, and also as an aspect of Brahman, but with different meanings, as we have discussed? Firstly, as you have stated.......
It is my understanding... that maya is the product of my mind, but if the mind is still, it is free of maya.... the mortal mind's thought processes (conceptualizations) prevent the realization of Brahman(unity).
So, in this sense, maya is a defective condition of the mind, in which one thinks he sees two, when there is but One. The mind is seeing incorrectly.
Then....
Considering that Brahman is one without a second, nothing can exist outside of this absolute reality
However, if for the moment, we adopt the idea that maya is also a spontaneous creation of Brahman via of lila (divine play), then Brahman and its maya are still Brahman, ie; still The One, without a second. This would fit with the following statement, since maya is not something that is added to what already exists:
"...to say that Brahman has some purpose in creating the world will mean that it wants to attain through the process of creation something which it has not. And that is impossible. Hence, there can be no purpose of Brahman in creating the world. The world is a mere spontaneous creation of Brahman. It is a Lila, or sport, of Brahman."
Ram Shanker Misra
Maya is illusion, so there is nothing being created; nothing outside of Brahman that is being added.
So yes, the understanding that maya exists is not possible so long as the mind thinks, for the very thoughts are maya, a case of using maya to discern if maya exists. It is equally absurd when the mind tries through thought to understand the oneness of Brahman, in this case mind is employing maya (duality) to understand not-maya (oneness).
OK. And as you have stated, "
if the mind is still, it is free of maya.". Now, being free of maya, it is now able to see correctly; to see Reality (Brahman) as it actually is. It is this True Mind which the Buddhists refer to as Original Mind, or Buddha Mind, and the Taoists as the Uncarved Block. Zen would say 'No-Mind', or Empty Mind. I like to think of it, in a sense, of the way those color computers work at Home Depot, when you take a paint chip in to them for color matching. The computer has a colorless neutral chip it uses as a reference against which it determines the color content of the chip you present. I know its a poor analogy, but it is just an aid, if you will. So, the transformation of the rational, thinking, dualistic mind into one which sees Reality as it is, now allows seeing the distinction between Brahman and its maya. It sees that both exist, but that they are now One. The Temporal and the Eternal are one and the same.
Now, if that is the case; that Brahman is indeed everything, with no other, then the Ordinary is also Brahman. There is play within the Ordinary world. Animals play. Humans, especially childtren, have a natural propensity toward games and play. Play seems to be a universal activity amongst mankind, perhaps an archetype. Some even say that the entire universe is at play: all atoms vibrate on/off. Everything in the universe is dancing, they say. A horse is a fox trot; a tree a waltz; etc., etc. , and it all is a reflection of the Absolute Joy of Brahman.
Perhaps instead of asking what the nature of the universe is, I should have asked what the nature of play is.
"When an ordinary man becomes a sage, he gains wisdom; when a sage becomes an ordinary man, he gains understanding"
Unknown Source