Results 31 to 40 of about 3,387,563 (289)

Derivatives of normal functions in reverse mathematics [PDF]

open access: yesAnnals of Pure and Applied Logic, 2019
Consider a normal function $f$ on the ordinals (i. e. a function $f$ that is strictly increasing and continuous at limit stages). By enumerating the fixed points of $f$ we obtain a faster normal function $f'$, called the derivative of $f$.
Anton Freund, M. Rathjen
semanticscholar   +1 more source

Pincherle's theorem in reverse mathematics and computability theory [PDF]

open access: yesAnnals of Pure and Applied Logic, 2018
We study the logical and computational properties of basic theorems of uncountable mathematics, in particular Pincherle's theorem, published in 1882. This theorem states that a locally bounded function is bounded on certain domains, i.e. one of the first
D. Normann, Sam Sanders
semanticscholar   +1 more source

Impact of Flipped Classroom on Mathematics Learning Outcome of Senior Secondary School Students in Lagos, Nigeria

open access: yesAfrican Journal of Teacher Education, 2020
This study examined the impact of the flipped classroom on the learning outcome of secondary school students in mathematics in Lagos, Nigeria. It examined the impact of a flipped classroom package (FCP) on post-test performance (PP) and retention ...
Semiu Olawale Makinde
doaj   +1 more source

Mathematical Approach in Complex Surfaces Toolpaths

open access: yesMathematics, 2021
This paper represents the focus on developing efficient algorithms that reduce the operations required to be employed in order to obtain complex surfaces milling finishing toolpaths for the three axis NC (Numerical Control) machine within the reverse ...
Florin Popișter   +3 more
doaj   +1 more source

Reverse Mathematics of Topology: Dimension, Paracompactness, and Splittings [PDF]

open access: yesNotre Dame Journal of Formal Logic, 2018
Reverse Mathematics (RM hereafter) is a program in the foundations of mathematics founded by Friedman and developed extensively by Simpson and others. The aim of RM is to find the minimal axioms needed to prove a theorem of ordinary, i.e.
Sam Sanders
semanticscholar   +1 more source

THE REVERSE MATHEMATICS OF THEOREMS OF JORDAN AND LEBESGUE [PDF]

open access: yesJournal of Symbolic Logic (JSL), 2017
The Jordan decomposition theorem states that every function $f \colon \, [0,1] \to \mathbb {R}$ of bounded variation can be written as the difference of two non-decreasing functions.
A. Nies, M. Triplett, K. Yokoyama
semanticscholar   +1 more source

Technologies for Teaching Mathematics in a Multilingual Digital Environment

open access: yesEducation Sciences, 2022
The article considers the expansion of digital technologies and their impact on training modern specialists. The increase in the volume of information, students’ requests for interdisciplinary practice-oriented training, and the involuntary transition to
Galina Dubinina   +2 more
doaj   +1 more source

Partial impredicativity in reverse mathematics [PDF]

open access: yesThe Journal of Symbolic Logic, 2013
AbstractIn reverse mathematics, it is possible to have a curious situation where we know that an implication does not reverse, but appear to have no information on how to weaken the assumption while preserving the conclusion (other than reducing all the way to the tautology of assuming the conclusion).
openaire   +4 more sources

A Proposed Taxonomy of Teaching Models in STEM Education: Robotics as an Example

open access: yesSAGE Open, 2022
Many countries and regions have reached a consensus to promote science, technology, engineering, and mathematics (STEM) education in the past decade.
Baichang Zhong   +3 more
doaj   +1 more source

Set Existence Principles and Closure Conditions: Unravelling the Standard View of Reverse Mathematics† [PDF]

open access: yesPhilosophia Mathematica, 2018
It is a striking fact from reverse mathematics that almost all theorems of countable and countably representable mathematics are equivalent to just five subsystems of second-order arithmetic.
Benedict Eastaugh
semanticscholar   +1 more source

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