Recent content by highflyyer

  1. H

    Database Table Design for Canadian Electoral Data

    It was given to me as part of the question. My supervisor also mentioned that she created a schema in the database and that should I have write access to it, but I am not sure how that relates to the creation and population of the tables.
  2. H

    Database Table Design for Canadian Electoral Data

    This here is the updated question: Consider the following in a database: Table 1 should contain the following columns and be named vote_share: ● Riding Number ● Riding Name in English ● Riding Name in French ● Total votes ● Turnout (votes / voters) ● Conservative Vote Share ● Liberal...
  3. H

    Database Table Design for Canadian Electoral Data

    I have been asked by my team lead to create two tables for a database and to outline the rationale behind my table design choices.Table 1 should contain the following columns and be named vote_share: ● Riding Number ● Riding Name in English ● Riding Name in French ● Total votes ● Turnout (votes...
  4. H

    A Geodesic Distance & Maximally Symmetric Spacetimes: Why Does it Matter?

    See the final paragraph on page 7 of https://arxiv.org/pdf/0804.1773.pdf.
  5. H

    A Geodesic Distance & Maximally Symmetric Spacetimes: Why Does it Matter?

    But I am not sure how the dependence changes if we have a Euclidean disk (that is, a plane with a boundary). My intuition is that the ##K(x,y)## now depends not only on the spacetime points ##x## and ##y##, but also on the 'border.' The dependence is such that ##K(x,y)## for the Euclidean disk...
  6. H

    A Geodesic Distance & Maximally Symmetric Spacetimes: Why Does it Matter?

    I haven't found a proof of it. I read this in a paper. This is my understanding of the problem. The Euclidean plane is a maximally symmetric space with ##3## translation symmetries and ##3## rotation symmetries. Any physical quantity ##K(x,y)## on the Euclidean plane, where ##x## and ##y## are...
  7. H

    Finding Energy Levels in Infinite Wells: College Physics 2

    I'm not sure if your post is suitable for the homework subforum, but to offer immediate guidance, you have to memorize the fomula for the energy levels and know what ground state, first excited state, etc. means. You also need to know that the ground state corresponds to ##n=0## and what the...
  8. H

    A Geodesic Distance & Maximally Symmetric Spacetimes: Why Does it Matter?

    Any physical quantity ##K(t,x,x')## on a maximally symmetric spacetime only depends on the geodesic distance between the points ##x## and ##x'##. Why is this so? N.B.: This statement is different from the statement that The geodesic distance on any spacetime is invariant under an arbitrary...
  9. H

    A AdS##_3## Cylinder: Killing Vectors & Isometry Group

    The isometry group of the anti-de Sitter spacetime is ##SO(d-1,2)##, which has a total of ##\frac{1}{2}d(d+1)## isometries. For the three-dimensional anti-de Sitter spacetime, these are ##6## isometries. These isometries have corresponding Killing vectors, which in global coordinates, are given...
  10. H

    A My T-shirt and the Standard Model

    Thank you for the clarification. I was not fully qualified to reply to the post.
  11. H

    A Solving a PDE in four variables without separation of variables

    If Green's function analysis just leaves a complicated integral, I'd rather skip that approach. Is there any way this equation looks similar to one of the many PDEs that's already been solved?
  12. H

    A My T-shirt and the Standard Model

    Line ##2## is a so-called kinetic term that describes the interaction of the different leptons and quarks amongst themselves. A kinetic term is a term with the derivative ##\partial## or the covariant derivative ##D##. Line ##4## is a so-called interaction term that describes the interaction of...
  13. H

    A Solving a PDE in four variables without separation of variables

    This is, in fact, a physics problem. The physics is that the cylinder is a radially cut-off (at radius ##\rho=1##) anti-de sitter cylinder in global coordinates. Please ignore the following (in italics) if you are not interested. This is just motivation and is just some dense physics that's of...
  14. H

    I Can phase shifts δl be calculated in scattering theory?

    These might be of interest to you: http://aqualung.mif.pg.gda.pl/index.php?mod=10&lang=en&s= http://aqualung.mif.pg.gda.pl/jmatrix/doc/jmatrix.pdf
Back
Top