Sökning: "arithmetical properties"

Hittade 3 avhandlingar innehållade orden arithmetical properties.

  1. 1. Students' understandings of multiplication

    Författare :Kerstin Larsson; Kerstin Pettersson; Paul Andrews; Lieven Verschaffel; Stockholms universitet; []
    Nyckelord :SAMHÄLLSVETENSKAP; SOCIAL SCIENCES; Multiplication; students’ understanding; connections; multiplicative reasoning; models for multiplication; calculations; arithmetical properties; matematikämnets didaktik; Mathematics Education;

    Sammanfattning : Multiplicative reasoning permeates many mathematical topics, for example fractions and functions. Hence there is consensus on the importance of acquiring multiplicative reasoning. LÄS MER

  3. 2. Contributions to the Metamathematics of Arithmetic: Fixed Points, Independence, and Flexibility

    Författare :Rasmus Blanck; Göteborgs universitet; []
    Nyckelord :HUMANIORA; HUMANITIES; NATURVETENSKAP; NATURAL SCIENCES; arithmetic; incompleteness; flexibility; independence; non-standard models; partial conservativity; interpretability;

    Sammanfattning : This thesis concerns the incompleteness phenomenon of first-order arithmetic: no consistent, r.e. theory T can prove every true arithmetical sentence. The first incompleteness result is due to Gödel; classic generalisations are due to Rosser, Feferman, Mostowski, and Kripke. LÄS MER

  4. 3. Characterization of Different Interface Types for HVDC Extruded Cable Applications

    Författare :Espen Doedens; Chalmers tekniska högskola; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; polymer surfaces; cable peelings; HVDC; Roughness; Charge injection; XLPE; Field enhancement factors; Schottky injection; DC breakdown; Voltage decay; interfaces; Fowler-Nordheim injection; extruded cable; Roughness assisted charge injection.; Charge decay;

    Sammanfattning : In extruded HVDC cable systems a variety of interface types can be found, and the interfacial properties depend on the application within the system. Such applications can be joints, terminations or the cable itself and they will all have different material combinations and manufacturing methods. LÄS MER