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The ordered structures of natural, integer, rational and real numbers are studied here. It is known that the theories of these numbers in the language of order are decidable and finitely axiomatizable. Also, their theories in the language…

Logic · Mathematics 2019-07-02 Ziba Assadi , Saeed Salehi

In contrast with software-generated randomness (called pseudo-randomness), quantum randomness is provable incomputable, i.e.\ it is not exactly reproducible by any algorithm. We provide experimental evidence of incomputability --- an…

Quantum Physics · Physics 2010-08-09 Cristian S. Calude , Michael J. Dinneen , Monica Dumitrescu , Karl Svozil

The ordered structures of natural, integer, rational and real numbers are studied in this thesis. The theories of these numbers in the language of order are decidable and finitely axiomatizable. Also, their theories in the language of order…

Logic · Mathematics 2020-09-15 Ziba Assadi

We consider the immediate consequence of an arguable addition to the standard Deduction Theorems of first order theories.

General Mathematics · Mathematics 2007-05-23 Bhupinder Singh Anand

We prove a curious identity for the Bernoulli numbers.

Number Theory · Mathematics 2013-08-16 Daniel B. Grunberg , Hao Pan , Zhi-Wei Sun

We give a self-contained proof of the preservation theorem for proper countable support iterations known as "tools-preservation," "Case A" or "first preservation theorem" in the literature. We do not assume that the forcings add reals.

Logic · Mathematics 2015-09-07 Martin Goldstern , Jakob Kellner

A perfect number is a number whose divisors add up to twice the number itself. The existence of odd perfect numbers is a millennia-old unsolved problem. This note proposes a proof of the nonexistence of odd perfect numbers. More generally,…

General Mathematics · Mathematics 2011-03-04 N. A. Carella

We prove a multivariate Lagrange-Good formula for functionals of uncountably many variables and investigate its relation with inversion formulas using trees. We clarify the cancellations that take place between the two aforementioned…

Mathematical Physics · Physics 2021-02-15 Sabine Jansen , Tobias Kuna , Dimitrios Tsagkarogiannis

The famous G\"odel incompleteness theorem says that for every sufficiently rich formal theory (containing formal arithmetic in some natural sense) there exist true unprovable statements. Such statements would be natural candidates for being…

Logic · Mathematics 2011-10-18 Alexander Shen

The necessary and sufficient conditions for differentiability of a function of several real variables stated and proved and its ramifications discussed.

Classical Analysis and ODEs · Mathematics 2007-05-23 R. P. Venkataraman

A definition of what counts as an explanation of mathematical statement, and when one explanation is better than another, is given. Since all mathematical facts must be true in all causal models, and hence known by an agent, mathematical…

Artificial Intelligence · Computer Science 2024-02-16 Joseph Y. Halpern

We provide an alternative proof that $\sqrt{2}$ is irrational that does not begin with the assumption that $\sqrt{2}$ is in fact rational.

History and Overview · Mathematics 2020-05-11 C. E. Larson

Inspired by computer assisted proofs in analysis, we present an interval approach to real-number computations.

Logic in Computer Science · Computer Science 2018-04-16 Małgorzata Moczurad , Piotr Zgliczyński

We lay the combinatorial foundations for [ShSt:340] by setting up and proving the essential properties of the coding apparatus for singular cardinals. We also prove another result concerning the coding apparatus for inaccessible cardinals.

Logic · Mathematics 2016-09-06 Saharon Shelah , Lee Stanley

In this paper, we consider iterative propositional calculi, which are finite sets of propositional formulas together with the rules of modus ponens and weak substitution (when formula being substituted must be already inferred). We…

Logic · Mathematics 2015-04-23 Grigoriy V. Bokov

Practicing mathematicians often assume that mathematical claims, when they are true, have good reasons to be true. Such a state of affairs is "unreasonable", in Wigner's sense, because basic results in computational complexity suggest that…

History and Overview · Mathematics 2024-10-28 Simon DeDeo

We prove that many seemingly simple theories have Borel complete reducts. Specifically, if a countable theory has uncountably many complete 1-types, then it has a Borel complete reduct. Similarly, if $Th(M)$ is not small, then $M^{eq}$ has…

Logic · Mathematics 2021-09-21 Michael C. Laskowski , Douglas S. Ulrich

Probably we have observed a new simple phenomena dealing with approximations to two real numbers.

Number Theory · Mathematics 2009-10-14 Igor D. Kan , Nikolay G. Moshchevitin

There are several theorems named after the Italian mathematician Vitali. In this note we provide a simple proof of an extension of Vitali's Theorem on the existence of non-measurable sets. Specifically, we show, without using any…

Dynamical Systems · Mathematics 2017-10-24 Tony Samuel

In a recent paper, Cabbolet argues that the PBR theorem is nonreal since in the ensemble interpretation of quantum mechanics the entangled measurement used in the derivation of the PBR theorem is nonexisting. However, Cabbolet (1) doesn't…

Quantum Physics · Physics 2024-05-13 Hofer-Szabó , Gábor
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