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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
Let us continue this discussion in chat.
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