Recent content by Maxos

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    Upper Bound for Optimal Value in Max Problem

    Definition of upper bound: Given an ordered set X and A \subset X , s \in X is its "upper bound" ( sup\{A\}) \leftrightharpoons \forall x \in A, x \preceq s et \forall y \prec s \exists a \in A : a \prec y
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    Graduate Thermodynamic vs Psych' Arrow of Time

    There was another identical thread posted some weaks ago, but I cannot find it. Yes, this is because processes happen all the time with continuity.
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    Is It Too Late to Start Studying for the GRE?

    Baggio... Roberto Baggio?
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    High School What is the Definition of Physics?

    What on Earth is this index, you have always on your mouth? Anyway, I do not care. Physics cannot be explained within other subjects, else this subject would be Philosophy, which has no longer means to understand Physics. You know, God is dead.
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    Graduate If x is an accumulation point of set S and e >0

    Well, a "limit point" (I cannot find the precise meaning of the phrase) has to be an accumulation point for the domain, then...
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    Graduate How can you describe the observing system mathematically?

    Observables are described with self-adjoint (I don't know the right english word, but I mean L=L*) hendomorphisms of an infinite-dimensioned complex space, and the possible values are their eigenvalues. Pure states of a QM-system are vectors of the space whose norm is = 1.
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    Solve for three variables with only two variables?

    Well, a linear system, rank of the reduced associated matrix is 2 and so is that of the complete one. 2 eq. 3 variables, rank1 = rank2, then \exists \infty^1 solutions bring the terms in c (or one of the other, it's the same) to the second member and solve the system in m and w. Ok...
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    Why Do People Find This Equation Hilarious?

    During the world championships, in Helsinki? Fiat rain!
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    PF Member Photo Thread Archive

    Well, that's what mom said.
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    High School What is the Definition of Physics?

    Some missing points: Physics is the sole foundation of modern science. Nothing can be autonomous from Physics.
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    Factorising a Quadratic I still struggle

    Are you really referring to ax^2+bx+c=0 ??
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    PF Member Photo Thread Archive

    http://wolfgang.altervista.org/Immagine.gif Me, yesterday, thinking of Future.
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    Undergrad Evaluate Integral: sinπ(k/2) with k = 1 to 6

    Ok, quite an usual occurrence!
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    High School What is the Definition of Physics?

    May I ask, How come? We are not talking about language at all! We are talking about a definition of Physics, your "democracy" is completely useless.
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    High School What is the Definition of Physics?

    So, good shipwreck.