Results 11 to 20 of about 6,123,368 (267)

Identifying Low-Frequency Tree-Ring Variation

open access: yes, 1991
I propose an approach to provide 95% confidence intervals for a chronology of low-frequency tree-ring variation so that a level of significance or importance for trends can be inferred.
Sheppard, Paul R.
core   +4 more sources

Revised Computer Programs for Tree-Ring Research

open access: yes, 1979
Three computer programs that are basic to the processing and development of tree -ring chronologies are now available. They were designed to refine and replace older programs that were previously furnished by the laboratory.
Graybill, Donald A.
core   +5 more sources

Tree-Ring Skeleton Plotting by Computer

open access: yes, 1979
Skeleton plotting is an established manual technique for representing the relative narrowness of tree rings in a single radius. These plots can be used as a visual aid to crossdating.
Cropper, John Philip
core   +4 more sources

Anti Neutrosophic multi fuzzy ideals of near ring [PDF]

open access: yesNeutrosophic Sets and Systems, 2022
The theory of anti neutrosophic multi fuzzy ideals of y near ring is dispensed in this work and various algebraic properties such as intersection, union of anti neutrosophic multi fuzzy ideals of y near ring are examined.
K. Hemabala, B. Srinivasa Kumar
doaj   +1 more source

Classification of 4-dimensional associative algebras with principal generators over complex numbers

open access: yesJournal of Hebei University of Science and Technology, 2017
In order to obtain the classification of 4-dimensional associative algebras with principal generators over complex number C under isostructuralism, by using the ring theory and distribution of roots of the equations satisfied by the principal generators:
Changzhou LI, Haiyang LI
doaj   +1 more source

The Homomorphism Theorems of M-Hazy Rings and Their Induced Fuzzifying Convexities

open access: yesMathematics, 2020
In traditional ring theory, homomorphisms play a vital role in studying the relation between two algebraic structures. Homomorphism is essential for group theory and ring theory, just as continuous functions are important for topology and rigid movements
Faisal Mehmood   +3 more
doaj   +1 more source

On the Theory of Henselian Rings [PDF]

open access: yesNagoya Mathematical Journal, 1953
The notion of Henselian rings was introduced by G. Azuma-ya [l]. We concern ourselves in the present paper mainly with Henselizations of integrally closed integrity domains. Chapter I deals with general integrally closed integrity domains. As a preparation of our studies, we introduce the notion of decomposition rings analogously as in the case of ...
openaire   +3 more sources

Neutrosophic Multi Fuzzy Ideals of Near Ring [PDF]

open access: yesNeutrosophic Sets and Systems, 2022
The theory of neutrosophic multi fuzzy ideals of y near ring is dispensed in this work and various algebraic properties such as intersection, union of neutrosophic multi fuzzy ideals of y near ring are examined.
K. Hemabala, B. Srinivasa Kumar
doaj   +1 more source

On the Theory of Ring-Logics [PDF]

open access: yesCanadian Journal of Mathematics, 1956
Boolean rings (B, ✗, + ) and Boolean logics ( = Boolean algebras) (B, ∩, *) are equationally interdefinable in a familiar way (6). Foster's theory of ring-logics (1; 2; 3) raises this interdefinability and indeed the entire Boolean theory to a more general level.
openaire   +2 more sources

Research Communication: An International Tree-Ring Isotope Data Bank—A Proposed Repository For Tree-Ring Isotopic Data

open access: yes, 2009
The International Tree-Ring Data Bank (ITRDB) is an invaluable resource, providing access to a massive and growing cache of tree-ring data. Oxygen, carbon, nitrogen and hydrogen isotope treering studies, which have provided valuable climatic and ...
Csank, Adam Z.
core   +5 more sources

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