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Jun
27
comment Is this problem correct?
also a duplicate of math.stackexchange.com/q/25701
Jun
27
reviewed Close Partial derivative of $f(t,r)$ with respect to the new variable $z=t/r$
Jun
27
reviewed Close What made you choose your research field?
Jun
27
reviewed Close Can I use my powers for good?
Jun
27
comment Show that $ \sum_{r=1}^{n-1}\binom{n-2}{r-1}r^{r-1}(n-r)^{n-r-2}= n^{n-2} $
That's called Abel[-Hurwitz] identity, I believe.
Jun
27
reviewed Leave Open Can ∂x and ∂y in a derivate be seen as ∂ times x or ∂ times y?
Jun
27
reviewed Leave Open Primitive recursion and $\Delta^0_0$
Jun
27
reviewed Close Predator Prey Model
Jun
27
reviewed Close partial order relation over a subset relation
Jun
27
reviewed Close How is the general concept of a basis useful?[topology]
Jun
27
reviewed Close Easy math proofs or visual examples to make high school students enthusiastic about math
Jun
26
reviewed Close Area of shadow and an object
Jun
26
reviewed Leave Open Why do we switch the denominator and numerator when we divide fractions?
Jun
26
reviewed Close Using a number system other than the decimal
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26
reviewed Close To evaluate a limit
Jun
26
reviewed Close Fixed elements of an automorphism
Jun
25
reviewed Leave Open Is there a way of finding the general solution to this equation
Jun
25
reviewed Close This is a question from Real Analysis by NL Carothers
Jun
25
reviewed Close $G/N\cong G/N'$ implies $N\cong N'$ for the normal subgroups?
Jun
25
reviewed Close Real analysis : Preliminary topics for - Measure Theory, Integration Theory, Differentiation and Integration