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Sally

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Name Sally
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Seen May 15 at 12:59
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Jan
3
 comment Extensions of Groups
@Derek: Agreed. sorry. I thought the question is trivial. That is why I deleted my comment. But that leads me to another (non-trivial) question: Do you know any necessary and sufficient condition on a group $G$ to has the form $\frac{H}{Z(H)}$ ?
Jan
2
 awarded ● Editor
Jan
2
 revised Extensions of Groups
improved
Jan
2
 asked Extensions of Groups
Dec
31
 awarded ● Scholar
Dec
31
 comment Continuum Hypothesis
@Andres: Thanks.
Dec
30
 awarded ● Nice Question
Dec
30
 comment Measurable sets and Valuation Theory
@Gerald: Why the plane in a countable union of transformations of $A$ ?
Dec
30
 comment Continuum Hypothesis
Thanks for the comments. But it seems that there is not much well-known equivalent algebraic form for CH (compared to the long list of algebraic forms of AC). am I right !? And Happy New Year to all.
Dec
30
 awarded ● Supporter
Dec
30
 awarded ● Student
Dec
30
 asked Continuum Hypothesis