Search results for "Probabilitats"
showing 4 items of 4 documents
Didactical note: probabilistic conditionality in a Boolean algebra
1996
This note deals with two logical topics and concerns Boolean Algebras from an elementary point of view. First we consider the class of operations on a Boolean Algebra that can be used for modelling ``If-then" propositions. These operations, or Conditionals, are characterized under the hypothesis that they only obey to the Modus Ponens-Inequality, and it is shown that only six of them are boolean two-place functions. Is the Conditional Probability the Probability of a Conditional? This problem will be only considered, with the Material Conditional Operation, on a Boolean Algebra endowed with a finite probability and in three different cases: with the Internal-Conditional Probability, with th…
Athanasii Kircheri è Soc. Jesu Ars magna sciendi : in XII libros Digesta : qua noua & universali methodo per Artificiosum Combinationum contextum de …
1669
1 tom en 2 volums En ambdós volums precedeix al text un frontispici i 1 full de gravats, que al primer representa l'Emperador Leopold, i al segon l'“Arbor philosophica" La resta dels gravats són gràfics i esquemes en la seua major part La paginació del primer tom és: [14], 245 pàgines, [3] fulls de gravats. — La paginació del segon tom és: [2], 251-482, [10] pàgines, [5] fulls plegats, [2] fulls de gravats Text a dues columnes i a línia tirada Postil·les marginals Signatures: *-**4, A-Z4, Aa-Zz4, Aaa-Ooo4, Ppp6
The number of maximal subgroups and probabilistic generation of finite groups
2020
[EN] In this survey we present some significant bounds for the number of maximal subgroups of a given index of a finite group. As a consequence, new bounds for the number of random generators needed to generate a finite d-generated group with high probability which are significantly tighter than the ones obtained in the paper of Jaikin-Zapirain and Pyber (Random generation of finite and profinite groups and group enumeration, Ann. Math., 183 (2011) 769-814) are obtained. The results of Jaikin-Zapirain and Pyber, as well as other results of Lubotzky, Detomi, and Lucchini, appear as particular cases of our theorems.
Effects of Grade Retention Policies: A Literature Review of Empirical Studies Applying Causal Inference
2021
The identification of the causal effects of grade retention policies is of enormous relevance for researchers and policymakers alike. Taking advantage of the availability of more detailed longitudinal datasets, researchers have been able to apply different identification strategies that address the classical problems of selection bias and unobserved heterogeneity that have plagued previous studies on the effect of retention. We present a systematic literature review of empirical studies aiming to unveil the causal effects of retention. This study underlines the need to consider and evaluate different kinds of grade retention polices as their effects vary depending on several dimensions (suc…