Výsledky vyhledávání - "Estructures algebraiques ordenades"

Satins, lattices, and extended Euclid's algorithm

Publikováno v: UPCommons. Portal del coneixement obert de la UPC
Universitat Politècnica de Catalunya (UPC)

Motivated by the design of satins with draft of period m and step a, we draw our attention to the lattices $$L(m,a)=\langle (1,a),(0,m)\rangle$$ L ( m , a ) = ⟨ ( 1 , a ) , ( 0 , m ) ⟩ where $$1\le a 1 ≤ a < m are integers with $$\gcd (m,a)=1$$

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::aae3491c8aa60544e538039092a923dc
https://hdl.handle.net/2117/365868

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Teoremes de representació per a àlgebres de Boole finites i retícles distributius finits

Autor: Massó Cuscó, Jordi

Publikováno v: UPCommons. Portal del coneixement obert de la UPC
Universitat Politècnica de Catalunya (UPC)
Recercat. Dipósit de la Recerca de Catalunya
instname

Un dels problemes centrals de les matemàtiques és el de la classificació. Per a cada tipus d objecte, tenim la corresponent noció d isomorfisme i ens interessa saber sota quines circumstàncies dos objectes d aquest tipus són isomorfs. A vegades

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=dedup_wf_001::cf335f76406828ffec9f4d07736084e6
http://hdl.handle.net/2117/168365

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Consensus, dissension and precision in group decision making by means of an algebraic extension of hesitant fuzzy linguistic term sets

Autor: Mónica Sánchez, Francisco Javier Ruiz, Jordi Montserrat-Adell, Núria Agell

Publikováno v: UPCommons. Portal del coneixement obert de la UPC
Universitat Politècnica de Catalunya (UPC)
Recercat. Dipósit de la Recerca de Catalunya
instname

Present measures of the degree of agreement in group decision-making using hesitant fuzzy linguistic term sets allow consensus or agreement measurement when decision makers’ assessments involve hesitance. Yet they do not discriminate with different

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::5a34856e607e0a35d64c243b98570196
https://hdl.handle.net/2117/117217

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Limit cycles bifurcating from a degenerate center

Autor: Jaume Llibre, Chara Pantazi

Publikováno v: Recercat. Dipósit de la Recerca de Catalunya
instname
UPCommons. Portal del coneixement obert de la UPC
Universitat Politècnica de Catalunya (UPC)
Dipòsit Digital de Documents de la UAB
Universitat Autònoma de Barcelona
Recercat: Dipósit de la Recerca de Catalunya
Varias* (Consorci de Biblioteques Universitáries de Catalunya, Centre de Serveis Científics i Acadèmics de Catalunya)

We study the maximum number of limit cycles that can bifurcate from a degenerate center of a cubic homogeneous polynomial differential system. Using the averaging method of second order and perturbing inside the class of all cubic polynomial differen

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::93578231cdf9a4f9984e847ae557bced
https://doi.org/10.1016/j.matcom.2015.05.005

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Teoria espectral de grafs

Autor: Garcia Vaqué, Àngel

Publikováno v: Dipòsit Digital de la UB
Universidad de Barcelona

Treballs Finals de Grau de Matemàtiques, Facultat de Matemàtiques, Universitat de Barcelona, Any: 2017, Director: F. Javier Soria de Diego
[en] Ever since Leonard Euler published the solution to the problem of The Seven Bridges of Königsberg

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=dedup_wf_001::8d3b524015426447c0c9c1ce6c490ad8
http://hdl.handle.net/2445/121995

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SQUARE-FREE DISCRIMINANTS OF FROBENIUS RINGS

Autor: Chantal David, Jorge Jiménez Urroz

Publikováno v: UPCommons. Portal del coneixement obert de la UPC
Universitat Politècnica de Catalunya (UPC)
Recercat. Dipósit de la Recerca de Catalunya
instname

Let E be an elliptic curve over Q. It is well known that the ring of endomorphisms of $E_p$, the reduction of E modulo a prime p of ordinary reduction, is an order of the quadratic imaginary field $Q(\pi_p)$ generated by the Frobenius element $\pi_p$

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::05231d960ed555fcb2ed7293fd091c76
https://doi.org/10.1142/s1793042110003599

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A recommender system based on group consensus

Autor: Roselló Saurí, Llorenç, Prats Duaygues, Francesc, Sánchez Soler, Monica, Agell Jané, Núria

Publikováno v: UPCommons. Portal del coneixement obert de la UPC
Universitat Politècnica de Catalunya (UPC)
Recercat. Dipósit de la Recerca de Catalunya
instname

This paper presents the foundation for a new methodology for a collaborative recommender system (RS). This methodology is based on the degree of consensus of a group of users stating their preferences via qualitative orders-of-magnitude. The structur

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=dedup_wf_001::57afd50f237858207ee8919152cbaef1
https://hdl.handle.net/2117/10004

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Short note: counting conjectures

Autor: De Soto, Adolfo R., Alvárez, A., Trillas i Gay, Enric

Publikováno v: UPCommons. Portal del coneixement obert de la UPC
Universitat Politècnica de Catalunya (UPC)

This paper only goal is to study what is, in some ﬁnite ortholattices, the number of conjectures, refutations, consequences, hypotheses and speculations.

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=dedup_wf_001::ca505657cb34ec4c17c04778c5b0ccc1
http://hdl.handle.net/2099/10924

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On the transfer principle in fuzzy theory

Autor: Kondo, Michiro, Dudek, Wieslaw A.

Publikováno v: UPCommons. Portal del coneixement obert de la UPC
Universitat Politècnica de Catalunya (UPC)
Mathware & soft computing; 2005: Vol.: 12 Núm.: 1

We show in this paper that almost all results proved in many papers about fuzzy algebras can be proved uniformly and immediately by using so-called “Transfer Principle”.

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=dedup_wf_001::e4e7334653af2eefa09760300f621ff0
http://hdl.handle.net/2099/2054

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A note on the symmetric difference in lattices

Autor: Renedo, Eloy, Trillas i Gay, Enric, Alsina Català, Claudi

Publikováno v: Mathware & soft computing; 2005: Vol.: 12 Núm.: 1
UPCommons. Portal del coneixement obert de la UPC
Universitat Politècnica de Catalunya (UPC)

The paper introduces a definition of symmetric difference in lattices with negation, presents its general properties and studies those that are typical of ortholattices, orthomodular lattices, de Morgan and boolean algebras.

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=dedup_wf_001::d0f03d0002de924cb758778742dda090
http://www.raco.cat/index.php/Mathware/article/view/84920

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