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Bhupinder Singh Anand

Publications and source records attributed to Bhupinder Singh Anand.

40 records · Page 3Linked to original sources

Some consequences of a recursive number-theoretic relation that is not the standard interpretation of any of its formal representations

We give a precise definition of a formal mathematical object as any symbol for an individual constant, predicate letter, or a function letter that can be introduced through definition into a formal mathematical language without inviting inconsistency. We then show: there is an elementary, recursive, number-theoretic relation that is not a formal mathematical object, since it is not the standard interpretation of any of its representations in Goedel's formal system P; the range of a recursive number-theoretic function does not always define a (recursively enumerable set) formal mathematical object consistently in any Axiomatic Set Theory that models P; there is no P-formula, Con(P), whose standard interpretation is unambiguously equivalent to Goedel's number-theoretic definition of "P is consistent"; every recursive number-theoretic function is not strongly representable in P; Tarski's definitions of "satisfiability" and "truth" can be made constructive, and intuitionistically unobjectionable, by reformulating Church's Thesis constructively; the classical definition of Turing machines can be extended to include self-terminating, converging, and oscillating routines; a constructive Church's Thesis implies, firstly, that every partial recursive number-theoretic function can be constructively extended as a unique total function, and, secondly, that we can define effectively computable functions that are not classically Turing-computable; Turing's and Cantor's diagonal arguments do not necessarily define Cauchy sequences.

math.GM↗

Is a deterministic universe logically consistent with a probabilistic Quantum Theory?

If we assume the Thesis that any classical Turing machine T, which halts on every n-ary sequence of natural numbers as input, determines a PA-provable formula, whose standard interpretation is an n-ary arithmetical relation f(x1, >..., xn) that holds if, and only if, T halts, then standard PA can model the state of a deterministic universe that is consistent with a probabilistic Quantum Theory. Another significant consequence of this Thesis is that every partial recursive function can be effectively defined as total.

math.GM↗

Paradox regained: Life beyond Goedel's shadow

Goedel's explicit thesis was that his undecidable formula GUS is a well-formed, well-defined formal sentence in any formalisation of Intuitive Arithmetic IA in which the axioms and rules of inference are recursively definable. His implicit thesis was that GUS is not formally inconsistent in any such system. I argue in a constructive, intuitionistically unobjectionable, and recursively definable formalisation PP of IA that GUS is a well-formed formula but an ill-defined formal sentence reflecting the "Liar" paradox in PP. Further, introducing "formal truth" and "provability" values to selected propositions of IA through PP leads to the collapse of Lucas' Goedelian argument.

math.GM↗

Beyond Goedel : Simply consistent constructive systems of first order Peano's Arithmetic that do not yield undecidable propositions by Goedel's reasoning

In this paper, we argue that formal systems of first order Arithmetic that admit Goedelian undecidable propositions validly are abnormally non-constructive. We argue that, in such systems, the strong representation of primitive recursive predicates admits abnormally non-constructive, Platonistic, elements into the formal system that are not reflected in the predicates which they are intended to formalise. We argue that the source of such abnormal Platonistic elements in these systems is the non-constructive Generalisation rule of inference of first order logic. We argue that, in most simply consistent systems that faithfully formalise intuitive Arithmetic, we cannot infer from Goedel's reasoning the Platonistic existence of abnormally non-constructive propositions that are formally undecidable, but true under every interpretation. We define a constructive formal system of Peano's Arithmetic, omega2-PA, whose axioms are identical to the axioms of standard Peano's Arithmetic PA, but lead to significantly different logical consequences. We thus argue that the formal undecidability of true Arithmetical propositions is a characteristic not of relations that are Platonistically inherent in any Arithmetic of the natural numbers, but of the particular formalisation chosen to represent them.

math.GM↗