what exactly is an isomorphism? - Mathematics Stack Exchange Whenever a problem or question of isomorphism comes up I am clueless as to what they mean From my understanding an isomorphism is in terms of graph theory where it is the same thing but written a
algebraic geometry - Does Zariski sheafification leave the value at . . . There is a different argument but I feel it is not as insightful Also, heuristically, we should not expect such an argument to exist because sheafification has a left-sided universal property (i e we know what the morphisms out of the sheafification are) whereas what you want to know is essentially about morphisms into the sheafification
statistics - The average highest temperature observed in a month - is . . . You are asking whether the highest average monthly level must be the highest annual level? But just look at examples Suppose, every month was always $0$ except that cyclicly one month a year hits $12$ Then the highest annual level is $12$, but every month averages to $1$ Or were you asking something else?
Are there different conventions for rounding to even? In my high school chemistry class, my teacher insists that the quot;round to even quot; rule means rounding to the nearest even number whenever the next digit is 5, regardless of any digits that f
Why do equilateral triangles relate to cubics I found this question talking about the relation between an equilateral triangle and cubics with three distinct real roots Here's an image from the original post with an example: What this post s
Natural log of a negative number - Mathematics Stack Exchange My teacher told me that the natural logarithm of a negative number does not exist, but $$\ln (-1)=\ln (e^ {i\pi})=i\pi$$ So, is it logical to have the natural logarithm of a negative number?