Commentary: Is the moon there if nobody looks -- Bell inequalities and physical reality

TL;DR

This paper provides a mathematical counter-example to Marian Kupczynski's controversial claim regarding Bell inequalities, demonstrating that his main assertion is false and clarifying the logical errors in his reasoning.

Contribution

It offers a rigorous mathematical refutation of Kupczynski's claim, correcting the false assertion and addressing the logical flaws in his argument.

Findings

Kupczynski's claim is mathematically false

The paper presents a counter-example disproving the claim

Logical errors in Kupczynski's reasoning are identified

Abstract

Marian Kupczynski(MK)is the author of a controversial paper published (2020) in the journal Frontiers in Physics. The work is built around a mathematical claim by MK which is actually false, and MK's logical reasoning around his claim is also incorrect. The same claim was made by him in several other recent papers published in other journals. A proof that the claimed result is false is the main content of our present "Comment". It is purely a mathematical counter-example to a mathematical claim in a number of MK's papers.