What is Ιdeal in algebra
54844
Intuition behind "ideal"
92054
$X$ and $Y$ i.i.d., $X+Y$ and $X-Y$ independent, $\mathbb{E}(X)=0 $ and $\mathbb{E}(X^2)=1$. Show $X \sim N(0,1)$
2243
Check if antiderivative is elementary
7802
Showing $\prod\limits_{i<j} \frac{x_i-x_j}{i-j}$ is an integer
95863
Describe the units in $\mathbb{Z}[\sqrt{-d}]$
123903
If $E/F$ is algebraic and every $f\in F[X]$ has a root in $E$, why is $E$ algebraically closed?
143541
Decomposition of an algebraic number into a sum or product of algebraic numbers with smaller degree
153794
What is the meaning of $1/(D+a)$, where $D$ is the derivative operator?
89056
Intuitive understanding of ideal $I = (x+1,x^2+1)$ and the quotient $\Bbb Z[x]/I$
50875
How to reduce expressions with complex coefficients in the form of a+0.*I
140829
What does $b_i\mid b_{i+1}$ mean in this context?
127727
De Moivre Complex Roots: Definition of $i$ or $\sqrt {-1}$
18964
Find the determinant of $I + A$
36201
Complex towers: $i^{i^{i^{...}}}$
16713
Product of an exponential function of IDD variables
98968
$X$ is algebraic over $E$
55440
Draw a diagonal arrow across an expression in a formula to show that it vanishes