Sökning: "number"

Visar resultat 6 - 10 av 14335 avhandlingar innehållade ordet number.

1. 6. Making Sense of Negative Numbers

   Författare :Cecilia Kilhamn; Göteborgs universitet; []
   Nyckelord :SAMHÄLLSVETENSKAP; SOCIAL SCIENCES; mathematics education; metaphor; signed number; negative number; number sense; case study; longitudinal; social constructivism;

   Sammanfattning : Numbers are abstract objects that we conceptualize and make sense of through metaphors. When negative numbers appear in school mathematics, some properties of number sense related to natural numbers become contradictory. The metaphors seem to break down, making a transition from intuitive to formal mathematics necessary. LÄS MER

3. 7. L’accordo nell’italiano parlato da apprendenti universitari svedesi : Uno studio sull’acquisizione del numero e del genere in una prospettiva funzionalista

   Författare :Anna Gudmundson; Camilla Bardel; Ineke Vedder; Stockholms universitet; []
   Nyckelord :HUMANIORA; HUMANITIES; second language acquisiton; L2; gender; number; agreement; Italian; frequency effects; competition; form function mapping; validity; corpus; italienska; Italian;

   Sammanfattning : This study investigates the acquisition of grammatical gender and number agreement in Italian as a second language (L2). The theoretical framework is based on a functional approach that stresses the importance of form function mappings, cues, frequency effects and the statistical properties of the language input. LÄS MER

4. 8. Quaternion Orders and Ternary Quadratic Forms Orders of Class Number One and Representations of Algebraic Integers by Quadratic Forms

   Författare :Elise Björkholdt; Göteborgs universitet; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; quaternion order; ternary quadratic form; class number; even Clifford algebra; quaternion algebra; embedding number; 11E12; 16H05; 11E20; 11E25; 11E88; even Clifford algebra;

   Sammanfattning : Let R be the ring of integers in a totally real quadratic field K. The purpose of the thesis is to study totally definite quaternion R-orders and representations of elements in R by totally positive definite integral ternary quadratic forms. The thesis consists of three papers. LÄS MER

5. 9. Other Things Besides Number : Abstraction, Constraint Propagation, and String Variable Types

   Författare :Joseph Scott; Pierre Flener; Parosh Abdulla; Justin Pearson; Michel Rueher; Uppsala universitet; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; constraint programming; string constraint problems; Galois connections; abstraction; constraint propagation; computer-aided verification applications; Datavetenskap; Computer Science;

   Sammanfattning : Constraint programming (CP) is a technology in which a combinatorial problem is modeled declaratively as a conjunction of constraints, each of which captures some of the combinatorial substructure of the problem. Constraints are more than a modeling convenience: every constraint is partially implemented by an inference algorithm, called a propagator, that rules out some but not necessarily all infeasible candidate values of one or more unknowns in the scope of the constraint. LÄS MER

7. 10. Problems in Number Theory related to Mathematical Physics

   Författare :Rikard Olofsson; Pär Kurlberg; Nalini Anantharaman; KTH; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; number theory; mathetical physics; local zeta functions; cat maps; Beurling primes; MATHEMATICS; MATEMATIK;

   Sammanfattning : This thesis consists of an introduction and four papers. All four papers are devoted to problems in Number Theory. In Paper I, a special class of local ζ-functions is studied. The main theorem states that the functions have all zeros on the line Re(s)=1/2. LÄS MER