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  1. Who first defined truth as "adæquatio rei et intellectus"?

    Mar 28, 2022 · António Manuel Martins claims (@44:41 of his lecture "Fonseca on Signs") that the origin of what is now called the correspondence theory of truth, Veritas …

  2. Difference between PEMDAS and BODMAS. - Mathematics Stack …

    Dec 21, 2022 · Division is the inverse operation of multiplication, and subtraction is the inverse of addition. Because of that, multiplication and division are actually one step done together from …

  3. Prove that $1^3 + 2^3 + ... + n^3 = (1+ 2 + ... + n)^2$

    HINT: You want that last expression to turn out to be $\big (1+2+\ldots+k+ (k+1)\big)^2$, so you want $ (k+1)^3$ to be equal to the difference $$\big (1+2+\ldots+k+ (k+1)\big)^2- …

  4. factorial - Why does 0! = 1? - Mathematics Stack Exchange

    The theorem that $\binom {n} {k} = \frac {n!} {k! (n-k)!}$ already assumes $0!$ is defined to be $1$. Otherwise this would be restricted to $0 <k < n$. A reason that we do define $0!$ to be …

  5. Programación Lineal (PL) - Mathematics Stack Exchange

    El resultado de correr el proceso 3 por una hora es 2 barriles de gasolina 3. Todas las semanas se podrían comprar 200 barriles de crudo 1 a 2 dólares el barril y 300 barriles de crudo 2 a 3 …

  6. matrices - How to multiply a 3x3 matrix with a 1x3 matrix ...

    I have 2 matrices and have been trying to multiply them but to no avail. Then I found this online site and trying feeding it the values but yet no success. - R' . T is what i would like to do but ...

  7. Why is $\infty\times 0$ indeterminate? - Mathematics Stack …

    "Infinity times zero" or "zero times infinity" is a "battle of two giants". Zero is so small that it makes everyone vanish, but infinite is so huge that it makes everyone infinite after multiplication. In …

  8. Good book for self study of a First Course in Real Analysis

    Sep 6, 2011 · Does anyone have a recommendation for a book to use for the self study of real analysis? Several years ago when I completed about half a semester of Real Analysis I, the …

  9. complex analysis - Show that the function $f (z) = \log (z-i)$ is ...

    Jun 2, 2022 · Ok but the result ends up being the same, $u_ {xx} + u_ {yy}$ is never becoming zero since it is $\frac {x+y-1} {\sqrt {x^2 + (y-1)^2}}$

  10. Pole-zero cancelation method for PI controller design

    Jul 19, 2023 · I think it is ill-advised in practice to do pole-zero cancellation. Unstable pole-zero cancellation is just plain bad (the closed loop will be unstable) but stable pole-zero cancellation …