Results 61 to 70 of about 107,162 (337)

Rola aksjomatu w matematyce współczesnej oraz w perspektywie dociekań nad aksjomatem wyboru

open access: yesZagadnienia Filozoficzne w Nauce, 2011
We show how philosophy effected the shape of mathematics when the proof of Well-Ordering Principle was formulated by Ernst Zermelo. We also consider the significance of philosophy of mathematics today.
Katarzyna Lewandowska
doaj  

On the structure of completely useful topologies

open access: yesApplied General Topology, 2002
Let X be an arbitrary set. Then a topology t on X is completely useful if every upper semicontinuous linear preorder on X can be represented by an upper semicontinuous order preserving  real-valued function.
Gianni Bosi, Gerhard Herden
doaj   +1 more source

Relations between some cardinals in the absence of the Axiom of Choice

open access: yes, 2000
If we assume the axiom of choice, then every two cardinal numbers are comparable. In the absence of the axiom of choice, this is no longer so. For a few cardinalities related to an arbitrary infinite set, we will give all the possible relationships ...
Halbeisen, Lorenz, Shelah, Saharon
core  

The Finite and the Infinite in Frege's Grundgesetze der Arithmetik [PDF]

open access: yes, 1998
Discusses Frege's formal definitions and characterizations of infinite and finite sets. Speculates that Frege might have discovered the "oddity" in Dedekind's famous proof that all infinite sets are Dedekind infinite and, in doing so, stumbled across an ...
Heck, Richard
core   +1 more source

The Effect of Economic and Environmental Parameters on the Optimality of Sustainable Hybrid Energy Systems

open access: yesEnergy Science &Engineering, EarlyView.
Supplying load demand through a hybrid renewable energy system to reduce CO2 emissions. ABSTRACT The research considers an hourly residential load demand with a daily average of 988 kWh/day and investigates possible standalone systems, including solar panels (photovoltaic [PV]), wind turbines (WTs), diesel generator (DG), biogenerator (BG), and battery
Mohammed Alharbi   +6 more
wiley   +1 more source

Contraction Consistent Stochastic Choice Correspondence [PDF]

open access: yes
We model a general choice environment via probabilistic choice correspondences, with (possibly) incomplete domain and infinite universal set of alternatives. We offer a consistency restriction regarding choice when the feasible set contracts.
Dasgupta, Indraneel
core   +3 more sources

Rationalizing Choices under Justification Constraints [PDF]

open access: yesبرنامه‌ریزی و بودجه
This paper presents a model to explain choice behavior in contexts where expanding the set of available options leads decision makers to select alternatives that would not have been justifiable under more limited choice sets.
Hadi Pahlevan Yazdanabad
doaj  

Theory of Peaceful End of Life: Analysis and Evaluation Using the Whall Framework

open access: yesThe International Journal of Health Planning and Management, EarlyView.
ABSTRACT Aim This study aims to analyse and evaluate the theory of peaceful end of life to determine its relevance and applicability in nursing research, education and practice, particularly in the areas of palliative care and end‐of‐life care. Methods We conducted a theoretical‐reflexive study using specific criteria for analysing and evaluating ...
Romel Jonathan Velasco Yanez   +5 more
wiley   +1 more source

An Analysis of the Continuum Hypothesis

open access: yesAxioms
This paper analyzes the Continuum Hypothesis, that the cardinality of a set of real numbers is either finite, countably infinite, or the same as the cardinality of the set of all real numbers.
Andrew Powell
doaj   +1 more source

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