Recent content by Frogeyedpeas

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    Solving tricky functional equation

    Consider the following linear functional operator: $$Q_w[f(x)] = \lim_{h\rightarrow w} \lbrace \frac{f(x + h) - f(x)}{h} \rbrace $$ How does one solve the equation $$a_0(x)Q_0[f(x)] = a_1(x)Q_1[f(x)]$$ Spelt out that is: $$a_0(x)*f'(x) = a_1(x)(f(x+1) - f(x))$$ For the case of constant...
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    Is This Quadratic Form Positive Definite or Indefinite?

    out of curiosity what level of linear algebra is this? Because I just finished my course and we never covered this haha. Though we did talk about eigenvectors
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    Math Publishing a solution to a Mathematics Problem

    Suppose that an amateur mathematician finds a solution to a major unsolved problem and they have written their full proof and would now like to publish it somewhere or at least have it critiqued by the professional community. What steps should they take? Additionally, let's say that the...
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    How do you find the zeroes of a discrete function?

    Well it turns out if you do an iterated Newton method the number works. To speed things up i broke up the function into separate segments defined as linear. The function appeared out of the context of being given a discrete function how do you make a contonuous analog
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    How do you find the zeroes of a discrete function?

    w8 nvm I'm good, I got the method
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    How do you find the zeroes of a discrete function?

    So this problem i basically the same thing as frac{40sin(2x)} = 0.
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    How do you find the zeroes of a discrete function?

    ehhh not exactly from a class (sorry), and I don't have any sample problems for this thing either. It just kind of came up. My best guess is to use Newton's formula. I mean Newton's method
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    Delta function of two variable function

    What exactly do you mean by delta function? Are you referring to dirac delta function or something else?
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    How do you find the zeroes of a discrete function?

    Would Newton's method or some other method work? Consider the following problem: find the zeroes of the function: y = 40sin(2x) - floor(40sin(2x)) where Y,X \in R I don't exactly know how to handle this problem. My best insight so far is that it is only equal to zero whenever 40sin(2x)...
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    Does GR Consider Angular Momentum & Rotational Stress?

    Forgive ne if this sounds stupid but does GR take into account angular momentum, torsion, and other effects of rotation? The stress energy tensor doeznt appear to have any terns that are meant two accommodate angular momentum abd rotational stress.
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    Relativistic Mass and Volume Change in a Rapidly Expanding Sphere

    See, if one just considers the outer layer of the sphere; then, yes it is gaining momentum (ie becoming heavier) due to the lorentz factor, but at the same time as the volume expands this mass gets distributed around so the sphere is definitely becoming "heavier". Relativity says it has to. I...
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    Relativistic Mass and Volume Change in a Rapidly Expanding Sphere

    suppose I have a 10 kg sphere with homogenous distribution of mass (aka density is same everywhere) that is 10 m^3. Now suppose I rapidly increased its radius at a speed of 1/2c m^3 (and because its homogenous the volume increased correspondingly). Now my question is whether that would cause the...
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    A possible solution to the infinite summation of sin(x)

    So basically here's the deal: I believe there exists a P(x) defined on [-2π, 2π] such that over that interval P(x) = \sum^{\infty}_{n=0}[sin(πnx)] Its weird but I have a feeling that this might converge to a function such as tangent
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    Could molecular substitution occur?

    Suppose we lived in significantly hotter conditions that what we live in right now (or lower pressure)... could organisms composed of Tin or Lead as opposed to carbon, Bismuth/Antimony as opposed to Nitrogen, Selenium and Tellurium as opposed to oxygen and sulfur respectively, and substances...
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    Could SF6, Photosynthetic Bacteria, Hydrogen, and Ozone Make Mars Habitable?

    good question, haha, maybe we're going to need to bring in hydrogen from Jupiter or something to beef up the atmosphere (probably very expensive)
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