Sökning: "isomorphism"

Visar resultat 21 - 25 av 47 avhandlingar innehållade ordet isomorphism.

1. 21. Graph Propositionalization for Learning from Structured Data

   Författare :Thashmee Karunaratne; Stockholms universitet; []
   Nyckelord :data- och systemvetenskap; Computer and Systems Sciences;

   Sammanfattning : Learning from structured data is challenging in terms of learning concepts, patterns or relations hidden within the structured data. The state-of-the-art methods include logic based approaches and graph based approaches. LÄS MER

3. 22. Theory and Reality : Metaphysics as Second Science

   Författare :Staffan Angere; Teoretisk filosofi; []
   Nyckelord :HUMANIORA; HUMANITIES; necessitation; semantics; categories; Theory; metaphysics;

   Sammanfattning : Theory and Reality is about the connection between true theories and the world. A mathematical framefork for such connections is given, and it is shown how that framework can be used to infer facts about the structure of reality from facts about the structure of true theories, The book starts with an overview of various approaches to metaphysics. LÄS MER

4. 23. Families of cycles and the Chow scheme

   Författare :David Rydh; Dan Laksov; Martin Olsson; KTH; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Families of cycles; Chow scheme; Hilbert scheme; zero-cycles; divided powers; symmetric tensors; symmetric product; Weil restriction; norm functor; Algebra and geometry; Algebra och geometri;

   Sammanfattning : The objects studied in this thesis are families of cycles on schemes. A space — the Chow variety — parameterizing effective equidimensional cycles was constructed by Chow and van der Waerden in the first half of the twentieth century. Even though cycles are simple objects, the Chow variety is a rather intractable object. LÄS MER

5. 24. Classification and Construction of Low-dimensional Hom-Lie Algebras and Ternary Hom-Nambu-Lie Algebras

   Författare :Elvice Ongong'a; Sergei Silvestrov; Johan Richter; Joakim Arnlind; Mälardalens högskola; []
   Nyckelord :Mathematics Applied Mathematics; matematik tillämpad matematik;

   Sammanfattning : This thesis concerns the construction and classification of low-dimensional Hom-Lie algebras and ternary Hom-Nambu-Lie algebras. A classification of 3-dimensional Hom-Lie algebras is given for nilpotent linear endomorphism, as a twisting map, and a construction of 4-dimensional Hom-Lie algebras is done. LÄS MER

7. 25. Universal algebraic structures on polyvector fields

   Författare :Johan Alm; Sergei Merkulov; Anton Alekseev; Stockholms universitet; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Mathematics; matematik;

   Sammanfattning : The theory of operads is a conceptual framework that has become a kind of universal language, relating branches of topology and algebra. This thesis uses the operadic framework to study the derived algebraic properties of polyvector fields on manifolds.The thesis is divided into eight chapters. LÄS MER