In electronics, If you take an inverter, the logical NOR gate, and feed the output back to the input, you effectively get A= not A. And the “physical” result is either it oscillates going back and forth between 1 and 0 or it gets stuck at some fixed intermediate value between 1 and 0, depending on the physical (random ?) details of the circuit, but most likely it would oscillate at a frequency (pretty high I imagine). So this kind of representation of the relationship vaguely reflects and suggests an “infinite recursion of existence denying itself”, as physics likes to tease us with some kinds of Metaphysical “suggestions”.
But also, this simple (one transistor circuit more or less ?) materializes in a sense that A can’t be itself, but at the same time can’t be different from itself. But you get some kind of defined behavior, it remains tractable because it is an entity made up of constituent parts, so it can just make believe it is one entity (indivisible and justice and liberty for none ?) when obviously it is not since it is made up of so many atoms, etc. and being made up of many parts it can trick the relationship and fool it easily.
Also, a person having conflicting will powers (everyone is always in these states somewhat) can easily say “I can’t be myself” and at the same time “I can’t be but myself” (go figure what the self is). Again this is because a person (or mind or brain ?) is made up of constituent parts.
But in Metaphysics, A is a completely abstract entity, just like numbers (much closer to mathematical - platonic entities, but mathematical entities are still not 100 % Metaphysical entities), no constituent parts, no extension in space or time, no nothing, simply a delimitation, an entity, an item.
And in this very real world it really can’t be either itself or different from itself so it exists in a way we can’t imagine, it is totally intractable, but we can look at it from a distance in awe, and appreciate how astounding it is.
And so tell me what is the square root of the square root of no number at all ? Invent your new symbols, go on, create a new schematic of a modified mind… show me a new design.