Johannes Kloos
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 Mar 20 reviewed Reject local-rings tag wiki Mar 17 reviewed Approve Inversion of mean value theorem Mar 17 comment Minimizing and maximizing a term by placement of parantheses Mar 17 comment Minimizing and maximizing a term by placement of parantheses If I understand you correctly, $a_1 * \cdots * a_n$ has two possible interpretations: $a_1 \cdots a_n$ (* is multiplication), and $a_1 / \ldots / a_n$ (* is division, with parentheses yet to be places). What have you tried so far, and how did this problem come up? Mar 17 comment Minimizing and maximizing a term by placement of parantheses In the latter case, note that parenthesis placement makes no difference if $*$ is multiplication (why?). Mar 17 comment Minimizing and maximizing a term by placement of parantheses Your question is not quite clear: What does "can be multiplication OR division" mean here? Can any single * be one of the both, or are all the * occuring in the term always the same? In other words, could $a * b * c$ be $(a \cdot b) / c$? Mar 17 revised Minimizing and maximizing a term by placement of parantheses TeXified, and corrected tags. Mar 12 reviewed Approve $\exp(2)$ does not converge $2$-adically. Mar 12 reviewed Approve $\exp(2)$ does not converge $2$-adically. Mar 5 awarded Yearling Mar 3 reviewed Approve Calculating the limit $\lim((n!)^{1/n})$ Mar 3 reviewed Approve Show $(p − 1)!=−1 [p] \iff p \text{ is prime.}$ Mar 1 reviewed Approve indefinite-integrals tag wiki Feb 28 reviewed Approve Computationally more efficient technique than Singular Value Decomposition. Feb 27 reviewed Approve When is ${{x^2y} \over {(x^2+y^2)^\alpha}}$ continuous, using polar-coordinates Feb 17 reviewed Close How many 5-element subsets A of {1, 2, … , 15} are there, the sum of whose elements is divisible by 5 Feb 17 reviewed Close What is $\bigcap_{i \geq 2} A_i$ for this equation? $A_i = \{n \in \Bbb Z \mid n > i\} \cup \{n \in \Bbb Z \mid n < -i\}$ Feb 17 reviewed Close For a set with N members, what is the number of set partitions in which each subset is either of size 1 or 2? Feb 17 reviewed Leave Open What is the number of ordered triplets $(x, y, z)$ such that the LCM of $x, y$ and $z$ is … Feb 17 reviewed Leave Open Ring of polynomials in $\mathbb Z_{10}$ linear zero divisors