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 …

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 …

"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 …

Nov 29, 2013 · Does anyone know a closed form expression for the Taylor series of the function $f (x) = \log (x)$ where $\log (x)$ denotes the natural logarithm function?

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 …

Nov 15, 2019 · Thank you for the answer, Geoffrey. From what you wrote : 'Are we sinners because we sin?' can be read as 'By reason of the fact that we sin, we are sinners'. I think I …

May 9, 2014 · I know that there is a trig identity for $\cos (a+b)$ and an identity for $\cos (2a)$, but is there an identity for $\cos (ab)$? $\cos (a+b)=\cos a \cos b -\sin a \sin b$ $\cos …

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- …

Dec 2, 2020 · So, here is a fundamental question, division by zero is undefined, there are some ways to prove this. Lets take the following limit $$\\lim_{x \\to 0^+} \\frac{1}{x} = +\\infty $$ but …

Perhaps, this question has been answered already but I am not aware of any existing answer. Is there any international icon or symbol for showing Contradiction or reaching a contradiction in …