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Jun
6
reviewed Approve Solution of an equation and a system of inequalities
May
14
reviewed Approve substraction of groups in direct sum
May
12
comment Question about principle ideals and polynomials and quotient ring construction?
You are taking the ideal $<x^2+1>$ in $R[X]$, thus $<x^2+1> = \{ p\in R[X] | p = gf, g \in R[X]\}$. So it is every possible polynomial multiple of $x^2+1$.
May
12
answered A complex variable function integrated over an infinitesimal disk
May
10
reviewed Approve Evaluating the Legendre symbol $\left(\frac{5}{p}\right)$ using Gauss's lemma instead of quadratic reciprocity.
May
10
reviewed Approve How do you take the derivative of a variable with respect to a different variable:
May
10
reviewed Approve Probability of having k defined elements while choosing m elements from a set of N
May
10
reviewed Approve A curious compactness confusion: space filling curves in the hilbert cube that contradict a bona fide theorem?
May
10
reviewed Approve Complex numbers equivalence proof
May
9
reviewed Approve Topology: Example of a compact set but its closure not compact
May
8
reviewed Reject Calculating normalization constant in circle detection process
May
8
reviewed Approve Determinant matrix $3 \times 2$
May
8
reviewed Approve Convergence in Distribution and Exponential Function
May
8
reviewed Approve Improving my method for evaluating the limit of this function
May
7
reviewed Approve Finding a probability using Bayes theorem
May
7
reviewed Approve How to solve this ODE: $\ddot{y}+\frac{1}{2f(y)}\frac{df(y)}{dy}(\dot{y})^2=0$
Apr
2
comment Find the order of $Z(G)$.
Are $p$ and $q$ distinct?
Mar
20
answered If $\alpha$ and $\beta$ are ordinals then $\alpha \in \beta \Leftrightarrow \alpha \subsetneq \beta$
Mar
20
reviewed No Action Needed Integrating reciprocals of functions with known antiderivatives
Mar
19
comment Graph Theory Proofs (Don't understand the Concept).
Take a look at a maximum path in the graph (a path that can not be extended any further).