Results 21 to 30 of about 42,860 (295)

Computable analogs of cardinal characteristics: Prediction and rearrangement [PDF]

open access: yesAnnals of Pure and Applied Logic, 2021
There has recently been work by multiple groups in extracting the properties associated with cardinal invariants of the continuum and translating these properties into similar analogous combinatorial properties of computational oracles. Each property yields a highness notion in the Turing degrees. In this paper we study the highness notions that result
Iván Ongay-Valverde, Paul Tveite
openaire   +2 more sources

New results regarding the lattice of uniform topologies on C(X)

open access: yesApplied General Topology, 2023
For a Tychonoff space X, the lattice UX  was introduced in L. A. Pérez-Morales, G. Delgadillo-Piñón, and R. Pichardo-Mendoza, The lattice of uniform topologies on C(X), Questions and Answers in General Topology  39 (2021), 65-71.
Roberto Pichardo-Mendoza   +1 more
doaj   +1 more source

Headache Characteristics in the Neurological Emergency Department: A Retrospective Study

open access: yesFrontiers in Neurology, 2021
Background: The care of patients with headache in the emergency department (ED) represents a diagnostic and clinical challenge. Data on the prevalence and characteristics of headache patients in purely neurological EDs are sparse.
Florian Rimmele   +6 more
doaj   +1 more source

Determination of cardinal temperature of Euphorbia maculata and its hydrothermal model of germination [PDF]

open access: yesعلوم و فناوری بذر ایران, 2020
In order to quantify the germination characteristics and determine the cardinal temperature of germination of Euphorbia maculata, seeds were placed at constant temperatures (2- 45 °C).
Shayesteh Salehi   +2 more
doaj   +1 more source

Cardinal characteristics at $$\aleph_\omega$$ [PDF]

open access: yesActa Mathematica Hungarica, 2019
We prove the consistency of the statement $\mathfrak{u}_{\aleph_ω}<2^{\aleph_ω}$. We show that the consistency strength of this statement is exactly a measurable cardinal $μ$ so that $o(μ)=μ^{++}$.
S. Garti, M. Gitik, S. Shelah
openaire   +4 more sources

MORE ON HALFWAY NEW CARDINAL CHARACTERISTICS

open access: yesThe Journal of Symbolic Logic, 2023
AbstractWe continue investigating variants of the splitting and reaping numbers introduced in [4]. In particular, answering a question raised there, we prove the consistency of and of . Moreover, we discuss their natural generalisations $\mathfrak {s}_{\rho }$ and $\mathfrak {r}_{\rho }$ for $\rho \in (0,1)$ , and show that $\mathfrak {r}_{\rho }
Barnabás Farkas   +2 more
openaire   +2 more sources

On cardinal characteristics of Yorioka ideals [PDF]

open access: yesMathematical Logic Quarterly, 2019
AbstractYorioka introduced a class of ideals (parametrized by reals) on the Cantor space to prove that the relation between the size of the continuum and the cofinality of the strong measure zero ideal on the real line cannot be decided in . We construct a matrix iteration of c.c.c.
Miguel A. Cardona   +1 more
openaire   +3 more sources

THE ARABIC NUMERALS AS A CATEGORY OF THE CERTAIN QUANTITY

open access: yesSovremennye Issledovaniâ Socialʹnyh Problem, 2020
Purpose. The paper deals with the lexical and grammatical analysis of numeral in Arabic (the Afroasiatic language family). The cardinal, ordinal and fractional numerals are under investigation. Numerals, expressing the exact number, are considered in the
Nailya Gabdelkhamitovna Mingazova
doaj   +1 more source

Evaluation of germination characteristics and determination of cardinal temperatures of poppy (Papaver somniferum) seed [PDF]

open access: yesعلوم و فناوری بذر ایران, 2017
The aim of this study was to quantify the response of germination rate to temperature and to find cardinal temperatures required for different germination percentiles in Papaver somniferum. Four models of non-linear regression [Quadratic, Segmented, Beta
V. Amiri Monfared   +3 more
doaj   +1 more source

Ultrafilters on 𝜔-their ideals and their cardinal characteristics [PDF]

open access: yesTransactions of the American Mathematical Society, 1999
For a free ultrafilter U \mathcal {U} on
Saharon Shelah   +2 more
openaire   +3 more sources

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