Dear Robert,
Unfortunately, I did not study English and rely on the translation of the Google translator. In Russian, "justification" sounds more accurately "обоснование", i.e. search for reliable "foundation". And what foundation can be the strongest and most reliable7 This is an ontological basis.
The problem of justification (substantiation) of mathematics is the problem of "foundations of mathematics", which M. Kline described well in his book "Mathematics: Loss of Certainty". Interestingly, as mathematician, do you agree with the conclusions of M. Kline?
I am not a mathematician, but I am interested in the question: Why did Mathematics, "language of Nature", lose Certainty? So physics has lost its Certainty? And all knowledge has lost Certainty? The loss of certainty in the foundations of mathematics, and therefore knowledge in general, ultimately raises questions: Undecidability, Uncomputability, and Unpredictability ...
Today, a picture of the world is being imposed on society, based on the hypothesis of the "Big Bang" ? You, as I understand it, do not support this hypothesis. Didn't mathematics play a role here when physicists build a picture of the world on the basis of theories without their ontological basification? I am not a mathematician, not a physicist, not a philosopher, but my mind does not accept the "scientific picture of the world", which does not answer fundamental scientific questions about the nature of the "laws of nature" and fundamental constants. Therefore, I once got involved in solving the problem of justification (basification) of mathematics (knowledge). I wonder what your opinion on the article by Carlo Rovelli Physics Needs Philosophy / Philosophy Needs Physics ? I found that your essay is deeply philosophical.
With kind regards, Vladimir