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Sep
24
revised existence of a weakly cauchy sequence if the dual space is separable
added 12 characters in body
Sep
24
reviewed Approve probability of arranging books on shelf
Sep
24
reviewed Reject Order a list of sets based on a rule (pretty tough)
Sep
24
comment prove or disprove the statements about the Lebesgue measure
Corrected. ${}{}$
Sep
24
revised prove or disprove the statements about the Lebesgue measure
deleted 28 characters in body
Sep
24
reviewed Reject Numerically evaluating the limit of $\frac{x^4-1}{x^3-1}$ as $x\rightarrow 1$
Sep
24
answered What does the notation $H\biguplus RH$ mean?
Sep
24
comment What is $E \cap A$ where A is an algebra of subsets of $X$
In measure theoretic context, there is sometimes $E \cap \mathcal A$ used as an abbreviation for $\{A \cap E \mid A \in \mathcal A\}$ where $\mathcal A$ is some algebra or ring of sets.
Sep
24
comment Given an inductive function, how to calculate?
As I can compute $f(2)$ from the given values.
Sep
24
comment Given an inductive function, how to calculate?
But $f(2) - f(1) \ne f(1) - f(0)$.
Sep
24
comment Given an inductive function, how to calculate?
What difference?
Sep
24
answered Given an inductive function, how to calculate?
Sep
24
answered prove or disprove the statements about the Lebesgue measure
Sep
22
comment Is there a topological group that is connected but not path-connected?
How about en.wikipedia.org/wiki/Solenoid_%28mathematics%29
Sep
21
awarded  general-topology
Sep
20
reviewed Reject Relationship between O and o notation
Sep
20
reviewed Approve Why is $\sin(xy)/y$ continuous?
Sep
20
comment Product of Sums Minimzation. Please help!
@SaaqibMahmuud By looking at the tag (boolean-algebra) I guess he means $\neg z$, the complement, by $z!$. But, Guest, you should clarify your notation in any way. What are $x,y,z$? What $+$? What $\cdot$? What $!$?
Sep
20
comment Equivalent definitions of the sheafification of a presheaf
By definition, ${\rm Im}(\phi_{\mathcal F})_x$ is the direct limit of the $\phi_{\mathcal F}(V)\bigl(\mathcal F(V)\bigr)$ as $V \to x$, so each element is represented by an $\phi_{\mathcal F}(V)(s)$ with $s \in \mathcal F(V)$.
Sep
20
reviewed Reject How to solve this system of linear equations