Recent content by danieldf

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    Undergrad What is an Axiom? Definition & Examples

    I don't know about the requirements of a statement to be considered an axiom, but as I see it, seems axioms are to be more fundamental truths (which we consider to be). RH is such a complex proposition it seems to be pushing too much to consider it a axiom. Though there are a number of things...
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    Undergrad Integer Cevians - Equilateral Triangles

    Is anybody familiar with any theory of integer cevians on equilateral triangles? More specificaly, I was trying to find something about the number of integer cevians that divide the side in integer parts. Like, the eq triangle of side 8 have cevian 7 dividing one side into 3+5. Only reference...
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    Undergrad Right Triangle and the Pythagorean Triple Formula

    This formula does not give all possible triples. It gives all primitives and a bunch of the non primitives, right? If you add the multiples of those then you get all. But then they wouldn't be uniquely expressed (I guess..?). Would it be relevant to find a formula which generates them all with...
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    Graduate Is There a Single-Variable Solution to This Diophantine Equation?

    I mean a solutions in one variable. Like (2n, n²-1,n²+1) is a solutioin for x²+y²=z²
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    Graduate Is There a Single-Variable Solution to This Diophantine Equation?

    a(3b+1)=c The solutions are obvious. I want to know if there is a solution a(n), b(n) (and so, c(n)) or at least a solution a(b). Can someone help with that..?
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    Undergrad Is this considered a closed expression for pi?

    But.. We can say that -1 = e^i(pi+2kpi) , can't we..? So, i think that "problem" doesn't invalidate the identity. It's just that we are talking about complex numbers and extending functions can show us some "strange" things if we look at it like we look to the reals. Remember the famous sum...
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    Undergrad Is this considered a closed expression for pi?

    It is an identity. The use of 'i' really not matter. It's just a constant. And it follows right from the Euler's Formula: e^ti = cos t + i sin t which follows from Taylor expansion for e, sin and cos. With t=pi you have e^(pi i) = -1, so ln(-1)/i=pi
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    Graduate Irreducible Polynomial (or not?)

    Oh really.. Sorry, i just forgot that. They're integers (naturals in fact) And i mean irreducible over rationals. Thx!
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    Graduate Irreducible Polynomial (or not?)

    The polynomial is x^n + A1x^(n-1) + A2x^(n-2) + ... + A2x^2 + A1x + 1. Where An (integer) is not zero for all n and n is even. For example: x²+x+1; x^4+2x^3+3x^2+2x+1. I'm looking for a method to say if that kind of polynomial is irreducible over racionals... Or when it is. Thx!