Object reality

Any object 'is'.

Here the 'is' is the svarupa of atma, which is jnanam, or pure knowledge.

This pure knowledge manifests in the buddhi as 'I am', is self evident consciousness.

This pure knowledge is self existent, is satyam.

This has no name or form, and is not thinkable.

Any thought, any object has no existence of its own. It gains existence from this atma, which is satyam.

Atma is not behind the mind Behind is another thought.
Every thought 'is', and that is, is the svarupa of self evident consciousness manifest in the mind.

This self evident consciousness has no name or form, is not available for objectification, in every thought, it is not available as another object, rather is the reality of every object, the reality of every object is a non object atma, object gets resolved in atma.

Subject is also atma, subject loses its subject status, as and when object is resolved in atma.

Thereby atma alone remains, as neither subject , nor object, as pure satchitananda atma.