Mathematical truths are the result of quantum mechanical processes: When the initial quantum popped into existence out of absolute nothingness, there was no mathematics. It has developed stepwise ever since, by means of the standard quantum mechanical processes of quantum splitting and resonance of quantum systems.
Mathematics is contingent: The mathematics which we observe is the result of processes of which both the speed and the outcome are not predetermined. There was a time when 1 +1 was not 2, but undefined. Our universe could have produced an outcome in which 1 +1 = 3.
Only mathematics which expresses itself in the physical universe is true and unchangeable: Only if mathematics expresses itself in the physical universe can we be assured that it is true, and not just a human construction. When it expresses itself in the physical universe, it is effectively impossible to change the mathematics, because this requires very many changes to the physical universe.
No infinities, singularities or infinitesimals: Mathematics has developed in a finite number of steps, and is therefore finite.
Constructivism: Mathematical concepts which refer to themselves cannot have been produced by quantum mechanical processes, and are therefore human inventions, which are prone to contradiction. “Reductio ad absurdum” arguments do not demonstrate that a concept has been produced by quantum mechanical processes, and are therefore inconclusive. Only constructive proofs may be admitted.